Restoring accidentally deleted system files

Error Code 0x80070020 – What is it?

One of the problems encountered by Windows users when upgrading to Windows 10 from Windows 7 or Windows 8/8.1 is the Error Code 0x80070020. This error code normally occurs when users try to download updates from the Windows Update Website or simply by upgrading to Windows 10. Error Code 0x80070020 also occurs when the device already has a Windows 10 installed.

Once this error is encountered, it will cause malfunction of update installs and display the following message:

An error (-5006 : 0x80070020) has occurred while running the setup. Or The process cannot access the file because it is being used by another process”

Solution

Error Causes

In an attempt to fix Error Code 0x80070020, it is important to pinpoint what the cause is. The most probable cause of this error is due to interference. This error code most likely occurs when there is another automatic update running, for instance, an Antivirus scanning in real-time. If you’re scheduled to have an automatic update during real-time scanning, the Windows 10 update might malfunction.

Further Information and Manual Repair

In trying to fix Error Code 0x80070020, you can perform manual repair methods to resolve the issue effectively and efficiently. Most Windows users can easily employ these manual repair methods, even those who do not have technical abilities. However, there are certain instances where a Windows professional’s help is needed. If you don’t want to face any risk in resolving the issue, it would be best to consult a professional Windows technician or you can also make use of a powerful automated tool.

NOTE: It is best to attend immediately to errors encountered since unresolved errors can result in slowing down your computer’s performance. This might also cause other error messages to arise such as Error Code 0x80070057.

Method One: Restart Your Device

Since Error Code 0x80070020 is most likely encountered due to interference during your update, the easiest method you can do is to close all opened programs and restart your device. After restarting, try to start the update process again.

Method Two: Disable Antivirus Temporarily

Another quick and safe way to fix Error Code 0x80070020 is to disable your antivirus. You must take note though that in doing so, your computer will be susceptible to virus attacks. If you want to proceed with this method, follow these steps:

1. Locate all programs in process in the notifications area, found in the lower right-hand section of your screen. If in case the antivirus icon is not visible on the taskbar, you may have to click an arrow pointing up to show what programs are currently running.
2. Right-click on the antivirus icon then select the disable option.

Method Three: Run the Update Troubleshooter for Windows

The Windows Update Troubleshooter may resolve many of the errors encountered by Windows users when installing updates from Windows Update. To execute the troubleshooter, follow the steps below:

1. Access a menu by holding the Windows key and X. Wait for the menu to appear on the bottom left corner of the screen.
2. Open the Control Panel.
3. Change the appearance of files by selecting large or small icons in the View by option located on the upper right section of your screen.
4. Once you change the appearance of the files, choose the troubleshooting
5. Run the Windows Update Troubleshooter.
6. Restart your device then check if this resolves the problem.

Method Four: Execute A Clean Boot

Executing a clean boot means starting Windows using only a few resources, including startup programs and drivers. This safeguards minimizing conflicts and prevent software clash when an update is received. In performing a clean boot, you will be able to pinpoint what caused the manifestation of error code 0x80070020. Check Microsoft’s Support website to know how to execute a clean boot.

Method Five: Reset Windows Update Components

Performing this method is a bit risky and should be your last option if all methods were unsuccessful. This process will alter your device’s registry so you must ensure to perform accurately the steps. A single mistake can lead to modifying your registry erroneously, which might result in the occurrence of other error messages. Carefully follow the steps found on Microsoft’s Support website to successfully reset Windows Update components.

Resetting Windows Update components can also be done by implementing the following steps:

1. Open the Command Prompt by pressing Windows Key + X. Select Command Prompt (Admin) from the menu.
2. Stop the BITS, MSI Installer, Cryptographic, and the Windows Update Services.
3. Rename both the SoftwareDistribution and Catroot2 folders to <name of folder> old.
4. Start now the BITS, MSI Installer, Cryptographic, and the Windows Update Services.
5. Exit the Command Prompt then restart your device. After restarting, try installing the updates again.

Method Six: Disable Third-Party Antivirus

A third-party antivirus such as BitDefender may recognize the Windows Update as a threat since the new update of Windows 10 is probably not yet registered with this third-party antivirus vendor. To solve this, you must disable temporarily the antivirus before performing the update. Once the third-party antivirus is disabled, you can now proceed with the updating process. Update as well your third-party antivirus.

Method Seven: Use the DISM Tool for Windows 10

The Deployment Image Servicing and Management (DISM) is a command-line utility that is installed by default in Windows 10 system. This program is used to fix images in Windows. In the case of Error Code 0x80070020, the DISM can repair the recovery image in Windows 10 and can perform as a virtual hard disk as well.

1. Scan and check files for errors.
2. Open the Command Prompt by pressing Windows Key + X. Select Command Prompt (Admin) from the menu.
3. Type sfc /scannow
4. You can also use the following commands to check for corrupted files:

/CheckHealth – to check for corrupted files or components

/ScanHealth – to check for corrupted Windows image. This may take up to 10 minutes to finish

/RestoreHealth – to check for corrupted Windows image and do an automatic repair. This may take up to 20 to 30 minutes to finish

NOTE: In an instance where you cannot locate the good files in your computer, the system image files may be corrupted. If this happens, you need to have a copy of install.wim from a computer with good Windows 10 OS or the Windows 10 ISO file. Make sure that the source of the good files has the same language, version, and edition of your OS.

Cleaning corrupted files using DISM utility:

Enter the following commands one by one to perform the /RestoreHealth switch using the source path location of good files you copied:

1. DISM /Online /Cleanup-Image /RestoreHealth /Source:repairSource install.wim
2. DISM /Online /Cleanup-Image /RestoreHealth /Source:repairSource install.wim /LimitAccess
3. DISM /Online /Cleanup-Image /RestoreHealth /Source:repairSource install.wim:1 /LimitAccess

For example purposes, the “repairSource” is the source of the good files.

When you upgrade or update your Windows 10 computer but you suddenly got Error 0x8024a206 while trying to install the updates, it is due to a rouge update that was downloaded or because of some corrupted component in Windows. In case you don’t know, any file downloaded by Windows is verified for its integrity and if the files don’t pass the integrity test, then Error 0x8024a206 will most likely pop up during the Windows update or upgrade.

Option 1 – Reset the Windows Update components to the default

You have to stop a couple of services such as BITS, Cryptographic, MSI Installer, and Windows Update Services. And to do that, you need to flush the contents in the SoftwareDistribution folder. The Software Distribution folder in the Windows operating system is a folder that can be found in the Windows directory and is used to store files temporarily which might be required to install the Windows Update on your PC. Thus, it is required by the Windows Update and maintained by WUAgent. Aside from that, it also contains all the Windows Update History files and once you delete them, you will most likely lose the Update history. As a result, the next time you run the Windows Update, it may result in a longer detection time.

• Open the WinX Menu.
• From there, open Command Prompt as admin.
• Then type in the following command – don’t forget to hit Enter right after typing each one of them.

net stop wuauserv net start cryptSvc net start bits net start msiserver

• After entering these commands, it will stop the Windows Update Service, Background Intelligent Transfer Service (BITS), Cryptographic, and the MSI Installer
• Next, go to the C:/Windows/SoftwareDistribution folder and get rid of all the folders and files thereby tapping the Ctrl + A keys to select them all and then click on Delete. Note that if the files are in use, you won’t be able to delete them.

After resetting the SoftwareDistribution folder, you need to reset the Catroot2 folder to restart the services you just stopped. To do that, follow these steps:

• Type each one of the following commands.

net start wuauserv net start cryptSvc net start bits net start msiserver

• After that, exit Command Prompt and restart your computer, and then try to run Windows Update once more.

Option 2 – Re-register DLLs related to Windows Update

DLL files, also known as Dynamic Link Library, are parts of applications that are separated from the core program so that they can be used again as well as independently be updated. The DLL files are loaded into memory and then used. Note that they have to be registered with Windows so they can be loaded. So if they’re not, the main program will fail. And this is the same with the DLL files related to the Windows Update. Thus, you need to register them in order to resolve Error 0x8024a206.

• In the Cortana search box, type “command prompt”.
• From the search results that appear, right-click on Command Prompt and select the “Run as administrator” option.
• After that execute the commands listed below one after the other and don’t forget to hit Enter right after you key in each one of them.
  • regsvr32 JSCRIPT.DLL
  • regsvr32 MSXML3.DLL
  • regsvr32 WUPS2.DLL
  • regsvr32 WUPS.DLL
  • regsvr32 WUAUENG.DLL
  • regsvr32 WUAPI.DLL
  • regsvr32 WUCLTUX.DLL
  • regsvr32 WUWEBV.DLL

Note: You also have the option to run the commands together via a batch file. Simply create a batch file by copying all the commands in a notepad and then save it as “WURegisterDLL.bat”. After that, run the batch file and it will execute the commands all at the same time. Then you have to restart your computer and see if it has fixed the Error 0x8024a206.

Option 3 – Run the System File Checker

The SFC or System File Checker scan could detect and automatically repair damaged system files that could be causing the Error 0x8024a206. SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files. To run the SFC command, follow the steps given below.

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

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.

Option 4 – Run the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter could also help you resolve the Windows Update Error 0x8024a206. To run it, go to Settings and then select Troubleshoot from the options. From there, click on Windows Update and then click the “Run the troubleshooter” button. After that, follow the next on-screen instructions and you should be good to go.

If you suddenly find the Windows Recovery Environment not working and you see an error message saying, “Could not find the recovery environment”, then you’ve come to the right place as this post will guide you on how you can fix it. In times when you can’t boot into the Windows Recovery Environment, there could be several reasons behind it. However, have you ever wondered where exactly the Windows Recovery Environment is in your computer? Windows initially places the Windows RE Image file in the installation partition during Windows Setup so if you have installed Windows in the C drive, you can find the Windows RE at the C:/Windows/System32/Recovery or C:/Recovery folder. Keep in mind that this folder is hidden and later on, the system copies the image file into the recovery tools partition to make sure that one can boot into recovery if there are any issues with the drive partition. The “Could not find the recovery environment” error mostly occurs if the Windows Recovery Environment is disabled or if the “Winre.wim” file is corrupted. Thus, to fix this error, you need to refer to the given suggestions below.

Option 1 – Try to enable Windows Recovery Environment

• In the Windows Start Search, type “PowerShell” and from the search results that appear, right-click on Windows PowerShell and then select the “Run as administrator” option to open it with admin privileges.
• Next, type the “reagentc /info” command and tap Enter to execute it.
• After that, if the output states that Status is enabled, then you’re all set.
• Now type the “reagentc /enable” command and tap Enter to enable the Windows Recovery Environment. You will see a success message at the end signifying that Windows RE is available.

Option 2 – Try to fix the corrupted or missing “Winre.wim” file

If the Winre.wim file is either corrupted or missing, you need to get a new copy of this file from another computer where the Windows RE is working. Once you’re able to get a new copy of the Winre.wim file, you have to set the image path to a new location. For more details, refer to these steps:

• First, type “Powershell” in Windows Start Search and right-click on Windows PowerShell from the results, and select Run as administrator.
• Next, execute the given command below to change the path of the WIM file to the new location. Note that the steps should be used when the file path of the Windows Recovery Environment is different from the usual spot.

Reagentc /setreimage /path C:RecoveryWindowsRE

• As mentioned, if the file is corrupted, you just have to get a new copy from another PC but before you do that, make sure that the WINRE on that computer is disabled (just enable it later on) and then place it in the C:/Recovery path and then set its path again using the command given above and then verify its path by executing the following command.

reagentc /info command

Note: Since the Recovery folder is hidden as well as the WINRE folder in it and you won’t be able to access them using the Windows File Explorer, you need to use the Windows PowerShell or Command Prompt so that you can access them.

Option 3 – Try checking and fixing the WinRE Reference in the Windows Boot Loader

The Windows Boot Loader is the one that determines if it has to load the Windows Recovery Environment. It could be that the boot loader is pointing to an incorrect location which is why you’re getting the error. To resolve it, you have to check and fix the WinRE Reference in the boot loader. How? Follow these steps:

• In the Windows Start Search, type “PowerShell” and from the search results that appear, right-click on Windows PowerShell and then select the “Run as administrator” option to open it with admin privileges.
• After that, execute the “bcdedit /enum all” command.
• Next, look for an entry in the Windows Boot Loader identifier set as Current and look for “recoverysequence” in that section and take note of the GUID.
• Ensure that the device and the osdevice items show the path for the Winre.wim file and that they are the same. If not, you need to point the current identifier to the one which has the same.
• Once you’ve found the new GUID, execute this command: bcdedit /set {current} recoverysequence {GUID_which_has_same_path_of_device_and_device}
• Now check if the error in the Recovery Environment is fixed or not.

Option 4 – Try creating a Recovery Media

You could also try creating a Recovery Media to resolve the error in the Windows RE. All you have to do is download the Windows 10 ISO file using the Media Creation tool and then create a recovery drive. Once you’re done, check if it fixes the problem or not.

Like in Windows 10, Windows 11 will also support God mode to be enabled and used. For those readers that do know what God mode is, let me explain it in simple terms. God mode is the icon on the desktop that once clicked will open and let you adjust every option in the control panel and some hidden features for Windows inside one application. There are a lot of advantages to having this one-click fast access to features, especially if you are a power user. Luckily creating such an awesome icon and enabling God mode is very easy to accomplish, all you have to do is:

1. Create a new folder where you want to have the God mode icon
2. Rename folder exactly: {ED7BA470-8E54-465E-825C-99712043E01C}
3. Enjoy God mode

As you can see creating and accessing all settings at your fingertips is much easier than most people think. Enjoy your ultimate access to Windows 11 features and if you wish you can drag and drop sections from it into the desktop or anywhere for easy access to that specific topic.

A lot of users have experienced various issues either in installing a Feature or a Windows Update. One of these errors is the one with the error code 0x80d02002. If you are one of the users who is facing this problem right now, then the working solutions given in this post will surely help. The Windows Update error code 0x80d02002 indicates that Windows 10 fails to upgrade or install as there is some issue with the files that have been downloaded and Windows encounters an error in installing them. Thus, the best thing you can do in such a case is to start the installation from scratch but before you do that, here are some suggestions that might help.

Option 1 – Try to rename the SoftwareDistribution folder

The Software Distribution folder in the Windows operating system is a folder that can be found in the Windows directory and is used to store files temporarily which might be required to install the Windows Update on your PC. Thus, it is required by the Windows Update and maintained by WUAgent. Aside from that, it also contains all the Windows Update History files and once you delete them, you will most likely lose the Update history. As a result, the next time you run the Windows Update, it may result in a longer detection time.

• Open the WinX Menu.
• From there, open Command Prompt as admin.
• Then type in the following command – don’t forget to hit Enter right after typing each one of them.

net stop wuauserv net stop bits rename c:windowsSoftwareDistribution SoftwareDistribution.bak

• After entering these commands, it will stop the Windows Update Service, the Background Intelligent Transfer Service, and rename the SoftwareDistribution folder.
• Next, got to the C:\Windows\SoftwareDistribution folder and get rid of all the folders and files thereby tapping the Ctrl + A keys to select them all and then click on Delete. Note that if the files are in use, you won’t be able to delete them.
• Once all the contents in the Software Distribution folder are deleted, restart your PC and then go back to Command Prompt and input the following commands again.

net start wuauserv net start bits

Since the folder has already been flushed, it will be populated afresh the instant your restart your computer and open Windows Update.

Option 2 – Try to reset the Catroot2 folder

You can also try resetting the catroort2 folder as it is known to fix tons of Windows Update issues including the Windows Update error code 0x80d02002. Both the Catroot and catroot2 are Windows operating system folders that are required for the Windows update process.  So when you run the Windows Update, the catroort2 folders stores the signatures of the Windows Update package and helps it in the installation. It makes use of the “%windir%System32catroot2edb.log” file in the updating process. Afterward, the updates are stored in the SoftwareDistribution folder which is used then by the Automatic Updates in order to execute the updating process. Keep in mind that you must not rename or delete the Catroot folder. Although the Catroot2 folder is recreated automatically by Windows, the Catroot folder isn’t.

Option 3 – Try running the DISM tool to fix the broken Windows Update client

The Windows update/upgrade error 0x80d02002 might be caused by some issues in the Windows Update client so you need to run the DISM tool to repair it. Note that you have to use another computer or another Windows from a shared network to fix it.

Option 4 – Try to run the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter could also help you resolve the Windows Update error 0x80d02002. To run it, go to Settings and then select Troubleshoot from the options. From there, click on Windows Update and then click the “Run the troubleshooter” button.

Option 5 – Try to run Microsoft’s troubleshooter online

You also have the option to run Microsoft’s online troubleshooter which could help you fix Windows Update errors.

What is Error 3?

This is a type of Google Chrome update error code. It indicates a failure to communicate with Google update. The error code is displayed in the following format:

‘Update server not available (error: 3)’

Solution

Error Causes

Error 3 may be triggered by several reasons. These include:

• You are running Vista/ 7 and you have configured Google Chrome to run as an administrator
• Google Update is not registered properly
• Registry issues

Further Information and Manual Repair

Here are some of the best and effective DIY methods to resolve error 3 on your PC without any professional help. You don’t need to be a technical whiz to try these methods.

Method 1

If the reason for the error cause is related to Google Chrome configured as administrator on your PC, then simply run it as a normal user. This is a common issue with Google Chrome auto-updating mechanism.

Method 2

If the problem still persists, then it is advisable to try re-installing Google Chrome. To do this, first, uninstall Google Chrome. Go to the start menu, control panel, and then program and features. Choose Add and Remove Programs and uninstall Google Chrome. To activate changes, reboot your system. Now reinstall Google Chrome by downloading it from Google Chrome’s official website.

Method 3

If error 3 is triggered because Google Chrome is not registered properly, then try this method to fix the issue.

1. First, verify that GoogleUpdate.exe exists in the location specified in the Windows Registry Editor. For this, go to the Start Menu and then type Regedit in the search bar.
2. Now click OK. The registry editor will appear. Now in the tree view on the left, navigate to the following directory:
3. HKEY_CLASSES_ROOTCLSID{2F0E2680-9FF5-43C0-B76E-114A56E93598}LocalServer32
4. Make sure the default value corresponds to the location of your GoogleUpdate.exe or GoogleUpdateOnDemand.exe file. Also, verify that these files are located in the given path.
5. For instance, if they are located in different locations, then right-click the default value and select Modify.
6. Enter the correct file path and use double quotation marks for example "C:\Documents and Settings%USERNAME%Local SettingsApplication DataGoogleUpdateGoogleUpdate.exe(or GoogleUpdateOnDemand.exe)"

Method 4

Error 3 may also pop up because of registry issues. These issues occur when the registry gets overloaded with obsolete and unnecessary files like cookies, internet history, bad entries, and junk files. In such an event, it is advisable to download Restoro This is a user-friendly and cutting-edge PC Fixer embedded with a registry cleaner. The registry cleaner removes all the obsolete files instantly and repairs the damaged registry thereby resolving all errors including error 3. Click here to download Restoro and resolve error 3.

When you connect your TV via HDMI cable Windows will recognize it as another monitor and will control the display settings for your HDMI connection. In most cases using it as the extended desktop will work fine, issues will arise when you play video on it. Video playing applications can override Windows settings which can lead to strange results on the screen. Here in this guide, we will tackle with reasons and solutions to this particular issue. Solutions provided are not meant to be followed in the way they are presented but as a silent rule, they go from most common one to most rare so it is advisable to try them in the order presented.

FIXING RESOLUTION ISSUES

The first thing when experiencing resolution issues on your TV connected to a PC is to check TV settings. There is very likely a chance that you will need to manually adjust picture settings on the TV itself using TV controls. On older models of TV, there is an overscan option which can lead to different resolutions and screen sizes. Overscan is a technology that was used in order to help content creators to deliver consistent pictures on different screen sizes and aspect ratios but how technology has advanced and everything including aspect ratio was standardized overscan itself has become a relic of the past. If you are unable to access or see edges of your desktop on the TV screen it is very likely that overscan is the issue. In order to fix this be sure to select HDTV's aspect ratio to fit the screen setting in the picture setting. Sadly finding this option on your TV will be different from manufacturer to manufacturer and even from model to model of the same manufacturer so we can not cover all models but in most cases option is located under picture settings or advanced options. Sometimes you will face even different overscan settings instead of classic ft to screen options, in this case, experiment with the setting until you find one which will work. If you have it, find settings in the user manual of your TV. Luckily you have managed to find the proper option on your TV set and have chosen the right aspect ratio for display. If everything works ok there is no need for the next step but if you experience a different resolution than desired on your TV follow this next guide on how to change the resolution of the TV on your PC.

1. Press the ⊞ Windows and type Change Display Settings. Click on the top result.
2. Once the Display Settings App opens, you’ll see two screens (or more if you’ve got multiple HDMI outputs connected). Make sure you select the right display for the HDMI TV before making any changes. You can do this by clicking on Identify.
3. You’ll see the number from the screenshot above displayed on the monitors for a brief period. Depending on which screen is set to your primary display, make sure you change the settings for the HDMI monitor.
4. Select the HDMI monitor from the available displays.
5. Scroll down until you see the current resolution settings for your HDMI monitor.
6. You can change the resolution settings and test different values that match your HDMI TV’s configuration.
7. Once you change the setting, Windows will apply the new resolution for a limited time and revert if you don’t accept the new setting.
8. Once you’ve found the best resolution for your TV, select Keep Changes to keep the new resolution.

You are all set now, make sure that you have the latest drivers on your system and enjoy using your TV as a second monitor.

As you know, storage devices are an important part of the computer system for porting, saving, and extracting data files. And for you to differentiate between storage devices on your computer system, each one of the storage devices is labeled with a unique number referred to as Disk Signature for identification. The unique disk identifier is stored as a part of the MBR or Master Boot Record. Disk signature is used by operating systems in order to identify and set apart different data storage devices and hard disk drives in the computer for data access. These days, Disk cloning has become a regular practice in upgrading to larger hard disk drives. Drives are cloned in order to produce a similar copy to use both the original drive and cloned copy together. Moreover, lots of virtualization tools are being used to virtualize the physical hard disk drives to create virtual hard disk drives and several virtual machine clones that are created with the existing virtual hard disk drives. And since these are identical copies, chances these copies may have identical disk signatures. As a result, when you use both disks that have identical signatures at the same time you run into the Disk Signature Collision problem. This kind of problem does not often occur as the Windows system does not really allow two disks to function simultaneously when they have the same disk signature. When you encounter a Disk Collision problem in your Windows 10 computer, you may see the following error messages:

• The boot selection failed because a required device is inaccessible
• The disk is offline because it has a signature collision
• This disk is offline because it has a signature collision with another disk that is online

You can fix the disk collision problem by changing the disk signature which you can achieve using the command line utility diskpart in Windows PowerShell or Command Prompt or using Windows Disk Management utility. To fix the disk collision problem, you can make use of the command-line utility called diskpart in Windows PowerShell or Command Prompt to view and change the signature, or can make use of Master Boot record in the Windows Registry. You can also make use of Windows Disk Management Utility to change the signature. Simply follow the given options below to change the disk signature either way.

Option 1 – Change Disk Signature via Diskpart

• Type “command prompt” in the Windows Search bar and then right-click on the related search result and select the “Run as administrator” option.
• After that, type the “diskpart” command and hit Enter to open Diskpart.
• Next, type the “list disk” command to display all the disks available in the system.
• Next, take note of the problematic disk number with the status Offline from the list and then type the “Select disk x” command where x is the offline disk to select the offline disk. For instance, if you type “select disk 1”, it will display the “Disk 1 is now the selected disk” message.
• Now type the “Uniqueid disk” command to display the disk signature and to change the disk’s signature and set the disk online, type the “unique disk ID= (New signature)” where (New signature) is the new ID in hexadecimal. For instance, you can set the new id as “unique disk ID= 1456ACBD”.

Note: If you have given the wrong format ID, the command prompt will display the following error:

“The specified identifier is not in the correct format. Type the identifier in the correct format: in hexadecimal form for an MBR disk or as a GUID for a GPT disk.”

• After you’re done, the disk will be online, and then restart your computer.

Option 2 – Change Disk Signature via Disk Management Utility

• Tap the Win + R keys to open the Run dialog box and then type “diskmgmt.msc” and hit Enter or click OK to open Disk Management.
• Next, right-click on the disk that is marked as Missing or Offline.
• After that, select the Online command from the drop-down menu.
• Then from the selecting option Online, Windows will generate a new disk signature.

What is the Error 421?

Error 421 is a common SMTP (Simple Mail Transfer Protocol) Outlook error message. MS Outlook is one of the best and popular email applications widely used by PC Windows users for sending and receiving emails within and outside workplaces. It is most commonly used in offices by professionals for faster communication. This error may occur while sending and receiving emails on the server. The error 421 messages is displayed in either of the following formats:

“An unknown error has occurred: Server error 421” "Could not send your message. Error 421" 421 4.2.1 : (DYN:T1) http://postmaster.info.aol.com/errors/421dynt1.html 421 4.3.1 Out of disk space for temp file 421 4.3.2 All server ports are busy 421 Downstream server error 421 Fork failed 421 Greylisting enabled, please try later “An unknown error has occurred. Subject ‘Testing’, Account: ‘pop.charter.net’, Server: ‘mail.charter.net’, Protocol: SMTP, Server Response: ’421 Message rejected’, Port: 25, Secure(SSL): No, Server Error: 421, Error Number: 0x800CCC67”

Solution

Error Causes

Some common causes for this critical Outlook error are:

• PST storage size exceeds 2GB file size
• Improper ISP settings
• Slow internet connection
• PST file corruption
• Trojan attack and viral infection

This is a critical Outlook error that should be resolved timely. If you delay, it may cause you a great deal of inconvenience. The error code 421 hampers your ability to access your email account, send and receive emails, add new contacts, view emails, calendar entries, and journals. In other words, it just brings your email activities to a standstill locking you out of the account.

Further Information and Manual Repair

To resolve this error code on your system, you don’t always have to hire a professional or call the network personnel to do the job. It may be a critical error but the good news is that it is quite easy to fix. Even if you don’t have technical expertise, you can still repair it. Here are some of the best methods to repair this issue on your system:

1. Change the Server Settings to its Maximum Limit

Try changing your server settings. Here set the inbound connections limit at the maximum limit.

• To do this, open the Microsoft Exchange Server Administrator utility. The access path of this utility will vary depending on the installation procedure used to set up Exchange Server.
• Once you open the MS Exchange Server Administrator utility, click the ‘Connections’ icon in the left side navigation pane. Now double click the internet mail service icon in the right side pane. As you click it, the Properties window will open.
• Now click the ‘Connections’ tab in the Properties window and then click the ‘Advanced’ button. This will open the configuration window.
• Here reset the number for ‘Maximum Number of Inbound Connections’ to a high number, its maximum limit. After changing the settings, close all open Exchange Server Administrator program windows to successfully complete the process.

After the process is complete, try accessing your Outlook email account again; if it works, then that’s great the error 421 is resolved. However, if it doesn’t, then the problem could be related to viral infection.

2. Download a PST Repair Tool

If the cause of the error is PST files corruption, then not only will you be locked out of your email account, you are also at risk of losing all the data stored in your email account. However, the best way to resolve the error and ensure full data recovery is to download a reliable PST repair tool. By running a PST repair tool on your system, you can resolve the error 421 right away. It recovers your data, repairs corrupt and damaged PST files.

3. Scan Your PC with Restoro.

If viral infection and Trojans are causing the error 421 to pop up on your system, then it is recommended to download and scan your PC with Restoro. This is an advanced, intuitive, and user-friendly PC fixer. It is not just an antivirus but also a system optimizer and a registry cleaner. Unlike common antivirus software that only removes viruses and simultaneously slows down the system’s speed, Restoro removes all types of malicious software on your PC including malware, spyware, Trojans, and viruses, and also boosts the speed of your PC significantly. It is safe, easy to operate, and a quick fixer. It is compatible with all Windows versions. Click here to download Restoro and resolve error 421 today!

Black Screen During Installation - What Is It?

Many are upgrading their OS to Windows 10, however, it’s not always smooth sailing because users have been reportedly experiencing different bugs including Black Screen after a successful update.

One common issue in installing Windows 10 is the appearance of a black screen after installation. This usually occurs when the user restarts the computer. Initially, there will be a black screen only appearing on the monitor. There are also cases where a mouse cursor is present, while some cases have no cursor at all.

Not only that, it seemed that you’ve lost all your desktop icons when experiencing this bug.

Solution

Error Causes

Just like the other bugs experienced by Windows 10 users, booting to a black screen has reasons. Before you even try to look for the solution, you first have to determine the cause of the error, in this case, the error would be black screen when booting.

• Error on external devices such as printer or mouse.
• Having outdated display/video drivers that normally result in black screen when OS is updated.

If error messages are left unsolved, you may encounter other Windows 10 related issues such as error code 0xc0000142. 

Further Information and Manual Repair

Before you even think of upgrading your OS to Windows 10, you need to know that there are specific system requirements and specifications to be able to successfully update your operating system.

• Minimum of 1 gigahertz (GHz) Processor
• Either 1 (GB) (32-bit) or 2 GB (64-bit) Ram
• You need at least 16 GB of free hard disk space
• A Microsoft DirectX 9 graphics device or later with WDDM 1.0 driver graphics card
• 800 x 600 display
• A Microsoft account and Internet access.

There are more system requirements in order to use other certain Windows 10 features, but we’ll focus on solving your black screen problem in this article.

IMPORTANT NOTE: While it’s possible that you’ll be able to find the solution for your black screen during Windows 10 update, contacting the service of a professional technician or using an automated tool is advisable if you’re not confident in performing the methods to be discussed.

Method 1: Windows 10 DVD Boot

1. Hit Repair your computer at the Install Now screen.
2. Press Advanced Options
3. When you’re in the Advanced Options find Troubleshoot and click it.
4. Proceed to pressing Startup Repair
5. Simply follow the instructions of the screen and check if that helps solve the black screen problem.

Method 2: Safe Mode from Windows 10 DVD Boot

1. Go to Install Now screen
2. Hit Repair your computer button
3. Go to Advanced Options
4. Click Safe Mode option

There’s a chance that you’ll get an error prompt saying, “installation cannot be completed in safe mode.” If this happens, simply press Shift + F10. This command will redirect you to the Command Prompt. You just open Device Manager by keying in devmgmt.msc then disable the display adapters, now check if you’ll be able to successfully boot in normal mode.

This process will normally allow you to complete the Windows 10 installation, if that’s the case you can just update the display adapter drivers from the manufacturer’s website. Restart your computer and see if this solves the problem.

Method 3: Driver Roll Back

1. Hit Windows Key + X then press the Device Manager
2. Expand the Display Adapters option
3. Right-click the listed Display Adapter and press on properties
4. Find the Driver Tab and click on it, then press Roll Back Driver

Do take note, however, that the Roll Back Driver option is not available if there was no previous version installed.

Method 4: Check External Devices

Since one common cause of black screen during a Windows 10 update is the external devices you use in your computer, you might want to consider these steps as well.

1. Simply unplug all of the external devices you currently use
2. Restart your computer
3. If in case this solved your black screen problem, carefully plug back the devices one at a time to determine which of the device is the culprit.
4. Update the drivers for the outdated hardware using a reliable third party tool.

Method 5: Fast Startup Disabled

Some Windows 10 users had success in solving their black screen problem by disabling the fast startup.

1. Go to the Control Panel, find Power Options and press “Choose what the power button does,” which is located in the left pane of the panel.
2. Hit the “Change settings that are currently unavailable.”
3. Make sure to unmark the checkbox button saying, “Turn on fast startup.”