Mapi32.dll Outlook Error - Quick Fix

As you know, Microsoft Edge is the default web browser in Windows 10 operating system. It is a built-in browser that replaced the ancient Internet Explorer for its performance and features. Aside from being the default web browser, it is also set as a default PDF viewer in Windows 10. So if you open a PDF file, it will be automatically opened in the Edge browser even if you have installed a PDF reader on your computer. However, some users recently reported getting an error that says, “Couldn’t open PDF in Edge, Something’s keeping this PDF from the opening” when they tried to open a PDF file or view an internet link that has a downloadable PDF file in the Edge browser. If you are one of these users, read on as this post will help you troubleshoot the problem and fix it. This kind of error mostly occurs if you have installed other PDF viewers on your computer. They could be interrupting Edge while it tries to open the PDF documents. To fix it, check if Microsoft Edge is set as the default PDF viewer or you could also try to clear its browsing cache. In addition, you could also reset or repair Edge. For detailed instructions, refer to the given options below.

Option 1 – Check if Microsoft Edge is set as the default PDF viewer

The first thing you can do is to check if Edge is set as the default PDF viewer. If it’s not, you have to set it as one to fix the problem.

• Open Control Panel and go to Default Programs.
• Then click on the “Associate a file type or protocol with a program” option.
• Next, select the PDF file option and click on Change program.
• After that, select Microsoft Edge in the pop-up window and then select the “Always use this app to open .pdf” option.
• Now click the OK button to set Edge as the default PDF viewer and then check if you can now open the PDF file in the Edge browser.

Option 2 – Clear the browser cache of Microsoft Edge

• Open Microsoft Edge.
• Then click on the three horizontal dots to open the menu.
• From there, click on Settings. And under Settings, click the “Choose what to clear” button under the Clear browsing data section.
• Next, check all the checkboxes and then click the Clear button to clear the browsing data in the Edge browser.
• Restart Edge.

Option 3 – Reset, repair or reinstall Microsoft Edge via Settings

You can reset, repair or reinstall the Edge browser through Settings. If none of it helped, you can try the following:

• Open File Explorer and then go to this path – C:/Users/YourUsername/AppData/Local/Packages

Note: Before you type in the path in the Address bar, make sure that you put your user account name in place with the “YourUsername”.

• Tap Enter to proceed.
• Next, look for the folder named “MicrosoftEdge_8wekyb3d8bbwe” then right-click on it.
• Click on Properties and uncheck the option “Read-only” under the General tab in the Properties window.
• Click on Apply and then OK to save the changes made.
• After that, look for the MicrosoftEdge_8wekyb3d8bbwe folder again and delete it. And if a prompt stating “Folder Access Denied” appears on your screen, just click on the Continue button to proceed – doing so will delete most of the content inside the folder except for the folder named “AC”.
• Restart your PC.
• Now all you have to do is to re-register Microsoft Edge using PowerShell. In the Start Menu, search “Windows PowerShell”.
• Right-click on Windows PowerShell from the search results and select the “Run as administrator” option.
• Type in this command in the PowerShell windows and tap Enter – Cd C:/Users/YourUsername

Note: Once again, make sure that you key in your user account name in place of “YourUsername.

• After that, type in this command and tap Enter – Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml" -Verbose}
• Restart your PC.

Same as in previous Windows versions, Windows 11 will also use certain applications as default ones for opening certain file types and file extensions. And yes, same as in previous versions it will come preconfigured for certain file types and associated applications like for example photos for pictures. Of course, users usually have their own favorite applications for certain file types and much more prefer to open them inside the application of their choice instead of the default one. We can change the default application like in previous Windows versions but this time there are two ways and overall more control of this process. Windows 11 has settings for choosing default file type applications and default file extension applications giving you more control of this process.

The opening setting for apps

Whatever you wish to change default application or default extension application you will need to open settings for default application. Follow steps to quickly go into it.

1. Press ⊞ WINDOWS + I to open settings
2. Select Apps on left
3. On the right part select Default Apps

Now you are in settings for choosing default applications

Choosing default application by file type extension

This is considering by Microsoft as a typical way to set default applications inside Windows 11. Once you are inside the settings app there is a box labeled Enter a file type or link type. Inside the search box, type in file extension that you wish to associate the application with like .JPG, .TXT, or other. If the file extension is not associated with any application you will be presented with a Choose a Default button, if however, the file extension is already associated with the app, you will need to click on the app box itself. In any case, a pop-up will appear and ask How do you want to open YOUR FILE EXTENSION files from now on? Choose Application from the list of presented ones and click on OK.

Choosing default file type

Another method is to select the default application by file type selecting application for it. In the settings screen, under the search box, you will have a list of installed applications. Choose the application that you would like to associate a file type with and click on it. On the next details screen scroll down and select the file type that you want to associate with the selected application and click on OK.

Other/third method

There is also the third method for choosing the default application for file type but it includes some surfing on your hard drive and it can be more time-consuming for first-time settings. But it is fairly quick when you need to only use it once on some new file type (for example you have a new application installed and want to switch just one file type extension to that application). Locate the file that you want to associate with the application and right-click on it. Select Open With from the menu and then Choose Another App. Pop up will appear, select the application that you would like to use, and check the box beside Always use this app to open CHOOSEN EXTENSION files followed by clicking on the OK button.

Building your skill set could be a very important thing, especially in today’s world, and what’s the best way other than online learning classes. You are not exposing yourself to pandemics, staying safe in the warmth of your home and most of the courses are free. Presented here are sites that I believe will and can help you with your goal of learning desired material whatever that might be. Sites are listed in no particular order with a description of what each has to offer.

Coursera

https://www.coursera.org/ Coursera was one of the pioneers when it comes to college education online. When it started all courses were free and offered certificates if the taker has done tasks with a passing grade. Today not everything is free but still, there are tons of free courses that can help you to learn something new and to advance in your work or hobby. Google is using the Coursera platform to deliver its courses to the audience and besides google a lot of academic professors from Princeton, Stanford, John Hopkins and many more are presently offering their course material.

edX

https://www.edx.org/ edX has evolved from MITx, MIT’s free initiative to place some free academic lectures from its classrooms free into the world. Since it was rebranded into edX it started including other big university names like Berkeley, University of Texas System, Harvard, and many more. Since its infant days, edX has expanded and included many areas that it offers coursework from arts to science. Certificated today are mostly not free but course videos are, so if you care to learn and not wave certificates around this is a great place to do it.

Udemy

https://www.udemy.com/ Udemy has a little different approach to course material than previously mentioned websites. Teachers on Udemy are mostly people that are working in a given field. Programmers will teach programming, fitness instructors will teach training, etc. There are vas variety of topics even on lifestyle, hobbies even gaming to more serious ones like software developing hardware, etc. There are free courses but mostly are one-time purchases with unlimited access to course material and with frequent discounts udemy might be a good place to look if you can find anything interesting.

Alison

https://alison.com/ Alison is kind of Udemy if we are talking about course material and who is teaching, the difference however is that it has more free content and it is one of the rare websites on this list that has Language courses. Courses vary from beginner level to more advanced ones.

Udacity

https://www.udacity.com/ Udacity was also one of the earlier websites to offer free courses, in today’s world it still has free material but there is also paying one. The big difference from other competitors is that Udacity focuses mostly on programming, data science, and web development and it is very strong in this field. There are no courses about art. Music or similar, mostly IT stuff is covered here. If this is something that interests you, make a free account and give it a go.

Codecademy

https://www.codecademy.com/ Codecademy is a website mainly focused on teaching you how to code. Pro plan is there but there are a lot of basic and free courses on the mentioned subject. The curriculum is really wide covering Python, R, Java, JavaScript, SQL, Ruby, C#, C++, Swift, PHP, HTML, CSS and more so I am sure that if you are interested in coding this would be a pretty good place to find things. Besides pure language coding courses site offers also, Cybersecurity, Web design, Data science, web development, Game Development, Mobile Development, and many more courses on provided subjects.

Academic Earth

https://academicearth.org/ Academic Earth has been built with one simple premise: Everyone deserves access to education. Lead by this kind of mindset on Academic Earth you will find well, academic courses similar to ones found on edX and Coursera, but from mentioned sites here all courses are free and you will find only academic ones, there are no entrepreneur or expert courses here, just pure academic ones. If you wish to see and learn something the way it is taught in Harvard, Berkeley, MIT, etc this is the place for you.

Khan Academy

https://www.khanacademy.org/ Khan academy is completely free and it is offering courses matching certain grades for children. It is offering courses for all 8 years of elementary school, math courses for high school and college with some coursework on topics like science, arts & humanities, reading, life skills, etc. Despite not being on the same level as some university courses presented on other mentioned websites Khan Academy is a good place to learn a lot of basic skills that you could build upon later.

Conclusion

I hope that I have helped you in some way to expand your skill set and learn something new with provided sources and I hope to see you again on errortools.com

As you know, Windows programs depend on several operations to get executed and at the same time, there are also numerous parameters that have to be fulfilled for a program to get executed. However, based on some reports, there was an error when some users tried to run a program. This error says, “The application was unable to start correctly (0xc00007b)”. There could be various reasons why this error occurs but the main one is most likely due to an x86 application that is not compatible with the x64-based operating system. To fix this problem, you can run the Check Disk utility or reinstall the application or the Microsoft .NET Framework. You can also try reinstalling DirectX or replace the corrupted DLL file(s). For more details, refer to the given options below.

Option 1 – Try running the Check Disk utility

• In the Windows Search box, type “command prompt” and from the search results, right-click on Command Prompt and select “Run as administrator”.
• After opening Command Prompt, type this command and tap Enter: chkdsk <Partition Letter>: /f
• The command you entered will start to check for errors and fix them automatically. Else, it will throw an error message saying, “Chkdsk cannot run because the volume is in use by another process. Would you like the schedule this volume to be checked the next time the system restarts? (Y/N)”.
• Tap the Y key to schedule Disk Check the next time your computer restarts.

Option 2 – Re-enable the Microsoft .NET Framework

You could also try to disable the Microsoft .NET Framework then enable the latest version of the .NET Framework on your PC and check if the error is fixed

Option 3 – Try to reinstall the program

There are times when some supporting module for your application under the hood could have messed up the application where you get the error. To fix this, you have to uninstall the program and then download its latest version from its official site and then install it again. Once you’re done, run the application and see if the error is fixed.

Option 4 – Run System File Checker scan

If reinstalling the program didn’t work, you can also try running the System File Checker or SFC scan to fix the error. System File Checker is a command utility built into your computer that helps restore corrupted files and missing files. Refer to the following steps to run it:

• Hit the Win + R keys to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

• Reboot your computer.

Option 5 – Try running the DirectX Diagnostic Tool

Since the error has something to do with the DirectX Graphics APIs, you can run the DirectX Diagnostic tool to resolve the problem.

Option 6 – Try updating or re-installing DirectX

If the DirectX Diagnostic tool didn’t work, you can try to update or reinstall DirectX instead. This can help in fixing the problem because when you reinstall or update DirectX, it will replace the incompatible or corrupted components of DirectX from your computer.

What is the Registry Error Code 19?

Code 19 is a Windows PC error code that indicates a damaged or corrupt registry. This code usually appears when trying to start a connected device, the DVD/ CD ROM drive. Code 19 is a type of Device Manager Error code. When you experience Code 19, the error message is displayed on your Windows screen in either of the following formats:

"Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. To fix this problem you should uninstall and then reinstall the hardware device. (Code 19)"

"Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. To fix this problem you can first try running a Troubleshooting Wizard. If that does not work, you should uninstall and then reinstall the hardware device. (Code 19)"

You might encounter other error messages such as error code 42.

Error Causes

Typically the underlying cause of this error code is problems in the registry. The error should be fixed timely without any delays before the damage sets in. Registry issues are critical PC errors. If not resolved it can lead to system freeze, crash, and failure. You are most likely to lose all your important data.

Further Information and Manual Repair

If you have come across this error on your computer, you don’t need to panic. Though this is a serious issue the good news is that it is easy to resolve. You don’t have to be a computer programmer, technically sound or hire a technician to fix the error on your system. Here are a couple of ways to work your way out of this problem:

1. Uninstall and then Reinstall the  DVD/CD ROM Drive

For this here’s what you need to do: simply click on the start menu, and type Device Manager in the search box, and press enter. When the device manager window opens locate the DVD/CD ROM drives. Click on the + sign to expand it. Now right click on the DVD drive click uninstall. After doing this, restart your PC. On the restart, Windows should automatically detect and reinstall the DVD driver. Once the driver installation is complete now see if the DVD drive works. If the error still appears, then you need to repair the registry by deleting the corrupt registry entries. You can download drivers automatically by using a tool such as Restoro.

2. Trouble Shooting Method to Delete the Corrupt Registry Entries

To remove the corrupt registry entries, go to Start and select Run. Type ‘Regedit and press enter to open the registry editor windows. To continue you may be asked to enter the administrator password, insert it to proceed. Now the registry window will be displayed. Here locate the registry key HKEY_LOCAL_MACHINE, then navigate to the following sub registry key HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass{4D36E965-E325-11CE-BFC1-08002BE10318} Here you will see the upper filters registry entry in the right pane. Right-click on the upper filter and select delete. You will be prompted for the confirmation for deletion. Click on the yes tab to confirm. Exit the editor and restart your computer. If you are not technically sound, this may be a little confusing for you, and besides it does not guarantee to resolve all the registry issues on your PC so chances are that Code 19 error may reappear in a short time. To resolve registry issues for the longest time and ensure that errors like Code 19 don’t pop up every now and then, you need to perform proper and in-depth registry cleaning. For this, it is advisable to download Restoro.

As you know, Windows 10 offers its users tons of options to log in to their computers. This includes simple and easy methods like PIN and complex ones like the Windows Hello Face unlock. However, there are instances when you might face a situation where the login screen in Windows 10 does not appear at all. If you are currently facing this problem, worry not for this post will show you what you can do to fix this problem. There are actually two scenarios to this issue, you might encounter one where the login screen does not show up at all, while the second one is when the login screen shows up but there is no username or password box. There are several options you can check out to resolve the problem. You can try to run System Restore or try the combination of Ctrl + Alt + Delete keys. You could also try to enter a username and password to use the computer or disable Fast Startup or troubleshoot the problem in a Clean Boot State. You could also create a new User Account or run Fresh Start or run the Startup Repair. To get started, follow each one of the given options below.

Option 1 – Try using the Ctrl + Alt + Delete key combination

The first and simple thing you can do to fix the login screen is to tap the Ctrl + Alt + Delete keys and see if it makes the credentials appear or not. If not, proceed to the next given option.

Option 2 – Try running System Restore

If you aren’t able to boot into the desktop of your computer, you can run System Restore in the Advanced Startup Options by following these steps:

• Boot your computer into the Advanced Startup Options screen.
• From there, you will see some options to troubleshoot when you can’t log in to Windows in the usual way.
• Now select Troubleshoot > Advanced Options > Command Prompt.
• After that, type “rstrui” and hit Enter to execute the command which will start the System Restore process.
• Once it’s done, restart your computer.

Option 3 – Try to turn off Fast Startup

• Tap the Win + R keys to open the Run dialog box and type in “control” to open the Control Panel.
• Next, click on the Hardware and Sound section and click on Power Options.
• Afterward, select the “Choose what the power buttons do” option from the left side menu pane.
• Now click on Change settings that are currently unavailable and uncheck the entry that says, “Turn on fast startup (Recommended).
• Then click on Save Changes and restart your computer and see if it has fixed the problem or not.

Option 4 – Try troubleshooting the problem in a Clean Boot State

There are times when some conflicting programs installed in your computer might be the reason why there is an issue with the password box in the login screen of Windows 10. To identify which program is causing the problem, you need to put your computer in a Clean Boot State. To do so, follow the steps below.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” check box.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• From there, start to isolate the problem by checking which one of the programs you installed recently is the root cause of the problem.

Option 5 – Try to run Startup Repair

You might also want to run Startup Repair in fixing the issue with the login screen. To do so, follow the steps below.

• You can start by creating and booting from a bootable Windows 10 USB Stick.
• After that, click on Repair your computer located on the bottom left corner when you are on the initial Windows Startup screen.
• Next, click on Troubleshoot, and then on the other screen, click the Startup Repair option.
• Now select the operating system you want to repair. Once you do that, it will start to repair your operating system. Wait until the process is completed and then check if the problem’s now fixed.

As we near the end of 2022 we look at the current best antivirus software for popular platforms, why they are the best, and why you should get them.

Avira, a great free Antivirus

Avira has been around a long time with its free antivirus version of the larger protection suite. It had its ups and downs but the latest versions are really great. With high-speed scans and low system impact, Avira antivirus is really one of the best free antivirus software currently on the market.

The software itself has also received UI & UX updates making it straightforward and easy to use. The virus scanning engine is the same as in paid version that ranks among the top engines in the world for this type of work. The package also gives you some great browser protection and a good firewall as well, there is really no excuse to skip on this if you want a free solution.

The only thing that we would say is not so great in Avira is reporting some false positives, sometimes even for MS updates, it is rare but it can happen.

Malwarebytes, a powerful Windows antivirus

Malwarebytes Premium is easy to use, simple antivirus solution that shies away from complicated UI, and simply put, it just works. Its scanning engine is well-known and places among the top and best in the world often finding some malware that other can miss.

Another great thing is its integration with Windows itself, it is one of the rare applications that can and will work incredibly well beside your typical Windows protection tools so you can have both of them running at the same time.

Installation and running are really simple and every typical PC user will find it as easy as walking in the park. On the other hand, sadly system impact is a little high and it will have issues running on lower-end systems due to its memory requirements.

Intego MAC Internet Security X9, the best Mac antivirus

Gone are the days when MAC had no virus issues, since MAC rose in popularity among the users, also rose the number of viruses and malware. The system itself has some great protection built it inside but for more security and better control of it, you will need a third-party dedicated solution.

Intego was made by Mac antivirus experts who have been building this kind of software last 25 years. The interface is easy to use and premade presets are really helpful, but the security suite can also be customized to fit your needs and desires.

Since this is only available as a security suite, you are getting a firewall and some other security tools along with your antivirus that will run as a part of it.

The bad side is that scans can sometimes run slow, most of the time they are OK in terms of speed but occasionally they can switch to slower speeds and impact scanning time to some annoying times. Also, there is no webcam protection nor VPN service included where others on this list have them.

Bitdefender mobile security: best Android protection

While protection is not only needed for your gaming or workstation, software suites that are dealing with mobile and tablet security exist. The best of them is the Bitdefender antivirus mobile suite. Low on system resources and low on performance impact with the really great virus detection rate Bitdefender is at the top of suites for your phone.

Consistent high virus detection packed with low battery impact is great but the suite comes with tons of other tools as well like browser security tools, email protection, and real-time link and notification protection.

The application will always scan each file and newly installed application in the background and alert and cut off any found threat. App itself is easy to install and use and most of the time it will do everything in the background for you but offer you customization if you need it.

The package also includes VPN and application lock that will let you protect the critical applications from being accessed as well as an online account scanner. Anti-theft and anti-loss tools, which allow you to find, remotely lock or wipe a stolen or lost device, add yet another layer of protection.

One thing that is missing from this great package is fraudulent call protection. Newer Android phones have this feature inside but it would be nice if Bitdefender had it as well.

Bitdefender, the best antivirus software

Now that we have covered specific cases of each platform, there is one player that has all of them covered and with a quality product, that player is BitDefender and it is great. Personally, this is my protection suite of choice and as I type this it is running in the background.

Bitdefender has it all, low system impact, as a matter of fact, it is one, if not, the lowest performance impact engine on the market currently and that is packed with a great and highly consistent virus & malware detection suite. Along with real-time malware protection, browser security, and anti-spam tools, you also get anti-phishing defenses, ransomware protection, and a strong firewall.

Bitdefender scores are very high in both the zero-day threat and real-world protection tests at AV-Test, an established organization that tests antivirus software. Despite being tested against tens of thousands of well-known and widespread malware threats, the software consistently achieves a 100% blocking rate.

The suite also comes with a restricted free VPN and with parental controls as well. Webcam and microphone protection are also included in the suite and on top of all, it has great pricing plans and constant discounts.

BitDefender is really a great package and it might sound too good, but after years and years of personally using it I have not had single malware or virus issue, the only thing that I would put as a negative is that system is severely slowed down when system scans are performed so be sure to run or schedule them when you are not using your computer. This, of course, can put some people off and I will admit it is a serious drawback but for me, the security of my workstation is more important than leaving the computer for 20 or so minutes in order to perform a full scan of the system.

Code 0x80070070 – 0x50011 – What is it?

If you’ve recently tried installing Windows 10, you might have encountered error code 0x80070070 – 0x50011 or its alternatives (error code 0x80070070 – 0x50012 and 0x80070070 – 0x60000). Whatever formats this error code presents itself in, it's usually accompanied by a barrage of other errors, as underscored on Microsoft’s official site. If you’ve encountered this error code, it simply means that your computer system might not have the required or required space to install the upgrade.

Likely, if you’ve experienced error code 0x80070070 – 0x50011, it’ll likely appear in the formats highlighted below:

• 0x80070070 – 0x50011
• 0x80070070 – 0x50012
• 0x80070070 – 0x60000

Solution

Error Causes

At present, this Windows 10 upgrade error is triggered or caused by various factors:

• Lack of computer resources or space
• Virus/malware infestation
• A clogged registry

Further Information and Manual Repair

Whilst new, not much information has been propagated regarding this error. However, there are some manual / practical steps you can take to have your Windows 10 upgrade up and running. Since the primary aspect of solving this problem is to make space on your computer system, here are some ways in which you can do so manually.

Method 1: Get more space

• Check the current space on your computer  

Before making attempts to create space on your computer, it’s vital that you check to decipher how much free space you have available.

• Make use of Disk Clean-up 

Since there’s a free service available on your computer to create space, why not use it and save time? If the Disk Cleanup tool is employed regularly, this will free up hard drive space and optimize your computer to work better.

• Remove unwanted desktop apps 

There are several apps lying around on your computer that you simply don’t use, uninstall those and make space to elude error code 0x80070070 – 0x50011 or its alternatives (Code 0x80070070 – 0x50012, Code 0x80070070 – 0x60000)

• Remove or archive files  

If you have lots of photos, media, documents (files), videos, etc, that you don’t use or will only need in the future, try cloud storage. You’ll still have those files within your possession but just not in a physical location. However, they’re still accessible. Another suggestion: If you use programs such as One Drive or Google Drive for desktop, limit your use to only the online application.

• Add more storage

If you’re not able to implement the above steps to clear some space to accommodate your Windows 10 upgrade due to error code 0x80070070 – 0x50011, acquire more storage. This can be expanded by incorporating storage devices such as USB flash drives, CDs, cloud storage, and SD Cards.

Method 2: Scan your computer for virus/malware

If you regularly download stuff, especially software on the Internet from ‘not so secured’ sites, you might have picked up something. You might have downloaded malware or virus (along with other legit programs).

To resolve this issue, it’s advised and very important that you download a powerful antivirus and perform a complete scan of your computer system. After you’ve detected and removed the suspected malware/virus, you’ll then be able to eliminate error code 0x80070070 – 0x50011 and resume with your Windows 10 upgrade.

Method 3: Clean up your computer’s registry

If you do not clean your computer’s registry often, it could become congested or clogged by .XML files, junk files, and cookies. To resolve this problem, clean your registry by using a powerful and user-friendly tool to clean up the problem.

Click here to download Restoro.

There are times when you install a Windows update to your Windows 10 computer but you only got an error message saying, “The update isn’t applicable to your computer”. This is unusual as Windows was the one that downloaded them in the first place. To understand the reason behind this error, read on as this post will also give you a couple of suggestions you can try to fix the problem. One of the main reasons why this error occurs is that your computer might not have the required installed updates and many more. Other reasons include:

1. The update might be replaced. There are instances when a newer Windows version is already available on the computer and that the version you are trying to manually install is an older version which is why the Windows update failed.
2. The update might already be installed. There are times when the update process is still in progress and the earlier payload might have already been installed.
3. It could also be that it’s a wrong update for architecture. As you know, updates are designed accordingly based on the architecture of the computer so if the update you are trying to install does not match the architecture of your CPU then it’s no wonder you’re getting an error message.
4. Your computer might be missing a prerequisite update. There are Windows updates that depend on other updates so if you missed one and you’re installing another one, it could be the reason why you’re getting the error.

To fix the problem, here are some suggestions that might help.

Option 1 – Try verifying the package and the Processor Architecture

As pointed out earlier, updates are made according to the Windows versions. Thus, if one of the updates failed to install, you need to check if it’s applicable or not. The best way to do that is by searching the Windows update name on the official website of Windows. It could be that the Processor Architecture is not compatible with the Windows Update you are trying to install. If you have an X86-based processor, you can’t install x64-based installations of Windows and vice-versa. This usually happens when you’ve downloaded the update manually and then tried installing it.

Option 2 – Try checking if the update is old

The issue might be because you are trying to install an old Windows update which is why it didn’t work. To check, go to Settings > Update and Security > View Update history. From there, you can look for the update.

Option 3 – Try checking if the update is already installed

To verify the update, just go to the Windows Update history once more as you did in option 2, and then see if the update is already installed or not.

Option 4 – Try checking the prerequisites

AS mentioned earlier, there are some updates that depend on other updates before they get installed on your computer. The best way to verify is by checking the Microsoft Knowledge Base (KB). And to verify if the prerequisite updates are installed or not, just run the command below in PowerShell:

get-hotfix KB1111111, KB2222222, KB3333333

Note: In the command given above, you need to replace “KB1111111, KB2222222, KB3333333” with the actual update KB numbers.

Option 5 – Try running the Windows Update Troubleshooter

As you know, Windows 10 has various auto-repair built-in tools to help users fix small issues which used to get fixed manually. And in this case, you will need the Windows Update Troubleshooter to fix the issue.

• Go to Settings and click on Update and Security.
• From there, click Troubleshoot and click on Windows Update and then click the “Run the troubleshooter” option.
• After that, it will try to detect and automatically fix common issues in the Windows Updates which can be resolved by Windows itself. Note that the process may take several minutes before it completes so you need to wait until it’s done. Once it’s done, in case you have some pending update that wasn’t realized by the system early on, it will apply the fix right away and restart the Windows Update service.

DLL files have certain functions that help the programs in the computer run properly. One of these DLL files is the Msvcr120.dll_clr0400.dll. This particular DLL file is responsible for the extraction of the required resources during the installation of a program and is used when the program is launched or when games are launched in the C++ language. However, a number of users recently reported that they’ve encountered an error that says, “Msvcr120.dll_clr0400.dll is missing” when they tried to install an application or when they tried opening an application. This kind of error could be due to several factors. It is possible that the DLL file is corrupted or there are some programs that interfere with the DLL file. On the other hand, it is also possible that it has been infected by a virus. To resolve this error, here are some potential fixes you need to check out:

Option 1 – Run System File Checker scan

The first thing you can do to fix the error is to try running the System File Checker or SFC scan. System File Checker is a command utility built into your computer that helps restore corrupted files and missing files. Refer to the following steps to run it:

• Hit the Win + R keys to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

• Reboot your computer.

Option 2 – Troubleshoot the missing Msvcr120.dll_clr0400.dll error in a Clean Boot State

You can also troubleshoot the isDone.dll error in a Clean Boot state. It could be that there are some third-party applications in your computer that are preventing the application from getting installed and to isolate this possibility, you need to boot your computer in a Clean Boot State and then try installing the program again. Putting your computer in this state can help you identify which program is the culprit and thus isolates the problem. In a Clean Boot state, your computer will start using only the pre-selected minimal set of drivers and startup programs. Note that you have to disable and enable one process at a time.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” check box.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• After you’ve set your computer into a Clean Boot State, make sure that you’re signed in as administrator and then try to install the application again.

Option 3 – Try to re-register the problematic DLL file

You can also try to re-register the DLL to resolve the problem. The Regsvr32 tool is a command-line utility that can be used to register and unregister OLE controls like DLL and ActiveX (OCX) controls in the Windows operating system. Follow the steps below to use it.

• Open Command Prompt as admin from the WinX menu.
• Next, type the following commands in the elevated Command Prompt and hit Enter to execute the command. This will re-register the affected DLL file using the Windows operating system tool, regsvr32.exe.
  • exe /[DLL file]
  • exe [DLL file]

Note: Replace “[DLL file]” with the name of the DLL file that was pointed out in the error.

• After you execute the given commands, you should see a message saying, “DllRegisterServer in vbscript.dll succeeded” if the Regsvr32 tool was able to run successfully. After that, try to install the program again and see if it now works.

Option 4 – Try to replace the DLL file with a trusted source

• First, you need to get the new DLL file from another computer with preferably the same file version number.
• After that, you need to boot your PC into Safe Mode and navigate to the paths listed below and then replace the file using a USB drive or other external storage devices.
  • x86: This PC > C:WindowsSystem32
  • x64: This PC > C:WindowsSysWOW64
• Next, type “cmd” in the Cortana search box and right-click on Command Prompt, and select “Run as administrator” to open it with administrator privileges.
• Now type the “regsvr32 ntdll.dll” command and hit Enter.
• Restart your PC and check if the error is now fixed.

Option 5 – Scan your computer using Windows Defender

The DLL file might also be infected with malware or virus and to eliminate it which could explain why you’re getting the “Msvcr120.dll_clr0400.dll is missing” error. Thus, you have to scan your computer using security programs like Windows Defender.

• Tap the Win + I keys to open Update & Security.
• Then click on the Windows Security option and open Windows Defender Security Center.
• Next, click on Virus & threat protection > Run a new advanced scan.
• Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.