Fix Kernel Power Blue Screen in Windows

DLL files, also known as Dynamic Link Libraries are external parts of applications that run on Windows as well as other operating systems. Almost all applications are not complete in themselves and store code in different files. In this post, we will be discussing one DLL file called ntdll.dll. It is described as “NT Layer DLL” which means that it contains some Kernel functions that help in the normal functioning of the Windows operating system. It is created by Windows in the System32 folder when the OS gets installed. This file can serve different programs simultaneously by providing them with different Kernel functions which support the programs’ performance. However, if you encounter the ntdll.dll file error on your Windows 10 computer, read on as this post will guide you in fixing the problem.

Option 1 – Try to re-register the ntdll.dll file

You may have to re-register the ntdll.dll file using the regsvr32.exe before you can successfully install the program and fix ntdll.dll file crash error. The Regsvr32 tool is a command-line utility that can be used to register and un-register the OLE controls like DLL and ActiveX (OCX) control 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 /u ntdll.dll
  • exe ntdll.dll
• 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 2 – Disable problematic Internet Explorer add-ons

There are instances when some add-ons in the Internet Explorer browser can cause the ntdll.dll file crash error. Thus, you need to disable some add-ons in Internet Explorer and then check if it fixes the problem.

Option 3 – Try running the DISM tool

You might want to repair potentially corrupted files in your system as having them could also trigger the ntdll.dll file crash error. To repair these corrupted system files, you can run the DISM commands:

• Tap the Win + X keys and click on the “Command Prompt (Admin)” option.
• After that, input each one of the commands listed below sequentially to execute them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • Dism /Online /Cleanup-Image /RestoreHealth

• Once you’ve executed the commands given above, restart your computer and check if the DCOM error is now fixed.

Option 4 – Try to run the Program Compatibility Troubleshooter

You might also want to run the Program Compatibility Troubleshooter. This built-in troubleshooter is available in the Windows Update & Security section. From there, select Troubleshoot. This will find a list of programs for you and since you have already downloaded the driver files, just click on Not Listed located at the top of the program list. After that, browse and select the driver files and then let the program do its job.

Option 5 – 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 6 – Try scanning your computer using Windows Defender

The ntdll.dll file crash error might also be infected with malware or virus and to eliminate it, 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.

If when trying to start Autodesk applications you receive a Network license not available error then please keep on reading, this guide is for you:

Today we will be solving the Device not found 3F0 error which is a common error, especially among HP (HP Pavilion G6), Lenovo, Acer, and Dell laptops/desktops. This error occurs when the computer is turned ON and when the system is about to boot. It can happen on windows 7,  8, or 10. When a mentioned error occurs one of the following messages will be displayed on your screen:

• “No bootable device – insert boot disk and press any key”
• “No Boot Device Found. Press any key to reboot the machine”
• “Boot Device Not Found. Please install an operating system on your hard disk. Hard Disk (3FO)”
• “No boot device is available”

The most common reasons for 3F0 error to occur is:

• Using the unbootable device or disk to boot from.
• If the bootable hard drive you are using might have corrupted or damaged somehow.
• MBR or boot sector is damaged on the bootable hard drive.
• If your system has gone through a virus or malware attack.
• The wrong boot order in the BIOS.
• Hard disk connection problem.
• System files or boot files unknowingly damaged.
• Corrupt hard drive partitions.

This is well, the most simple solution and the easiest one, try to change the boot sequence in the BIOS settings of your motherboard. Sometimes most easier solutions can provide great results and solve our problems. If sadly this fails and the issue persists move to the next solution.

2: Perform a Hard Reset

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Performing hard reset can often solve issues, to perform a hard reset do the following:

• Turn off the computer and unplug the power adapter. If there is a removable battery, it should also be removed.
• Then disconnect all peripherals, including the removable hard drive, etc.

then

• Press and hold the power button for 15 seconds to drain all remaining power.
• Insert the battery, and then re-plug the AC adapter into the laptop.
• Press the power button to turn on the computer.
• Once the computer starts up properly and the startup menu appears, use the arrow keys to select “Start Windows normally” and then press Enter.

Reconnect everything back of your peripherals. If by any chance problem still persists follow the next step:

3: Test Hard Drive Using HP Diagnostic Tool

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Use the built-in tool in the Hp device to solve the issue:

• Turn on your computer and keep pressing the Esc key until the menu appears on the screen.
• Next, press the F2 key.
• Choose the Components Tests option from the HP PC Hardware Diagnostics menu.
• Select Hard Drive from the Component Tests menu.
• Click on the Quick Test, then click on the Run once button.
• If there are still any issues with your hard drive, then run the Extensive Test.

4: Restore BIOS Default Settings

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• Press the Power button to start the computer, and immediately after this, repeatedly press the F10 key to enter the BIOS setup menu.
• To load and restore BIOS Setup Default settings, press F9 on the BIOS setup menu.
• Once loaded, press F10 to Save and Exit.
• Select yes, and then press Enter when it says Exit Saving Changes.

5: Reconnect Your Hard Drive

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• Turn the computer off and remove the power cable.
• If you have a removable battery, take it out
• Disconnect your hard drive and then connect it back.
• Reassemble your computer and turn the computer on to see if it fixed the issue.

6: Fix and Rebuild Damaged MBR

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• Boot from the original installation DVD (or the recovery USB)
• At the Welcome screen, click Repair your computer.
• Choose Troubleshoot.
• Choose Command Prompt.
• When the Command Prompt loads, type the following commands: bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd.

7: Fix Operating System

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• Prepare a Windows installation disc, CD/DVD or USB flash drive and connect it to your PC.
• During the installation process, launch Command Prompt.
• In Windows 7, under the System Recovery Options tab, click Startup Repair.
• In Windows 8 and Windows 10, click Repair your computer, then select Troubleshoot > Advanced options > Automatic Repair (Windows 8) or Startup Repair (Windows 10).

8: Replace the Hard Disk

In Windows 11 if you do not own a mouse or it has suddenly malfunctioned you can still move your arrow on-screen using the numeric pad. In this guide, we will guide you on how to turn this option ON, follow this easy guide step by step.

1. Press ⊞ WINDOWS + I to open Windows settings
2. Click on Accessibility on left
3. Scroll down to reach the interaction section on the right and click on Mouse
4. Click on Switch beside Mouse keys under accessibility options
5. Set your preferences
6. Close settings

Settings will be as always automatically applied.

What is Error 0xc0000142?

Error 0xc0000142 can occur in any of the Windows versions and usually occurs when an application fails to properly initialize.

This error can be critical for a computer as it signifies that the system is unstable. Error 0xc0000142 can cause slow performance in a PC, system freeze, startup and shutdown issues, blue screen and errors in installation.

Solution

Error Causes

Windows/Application Error 0xc0000142 can occur because of a number of reasons.

When a computer is an overload with data, or when system files get broken or missing, this error can occur and will result in startup and shutdown issues as well as the blue screen. Another reason, and one which is quite common, is improper computer maintenance.

This will cause a PC to perform slow, system freezes, and installation errors. This error displays ‘failed to initialize’ on either a Windows error box or the blue screen of death.

Further Information and Manual Repair

Error 0xc0000142 can occur at any time, but there are many ways to resolve it. For instance:

1) Clean the Registry

A corrupted registry is one of the major reasons why this error occurs. The registry is used by Windows to store information and settings on the computer, which is why it has a large database.

This database contains emails, wallpapers, saved passwords and much more in ‘file path references’. These allow Windows to run the common files in your system. A registry cleaner can fix any errors in the registry database.

2) Malware Scan

Viruses can cause certain applications to not function properly. Hence, download a strong antivirus and run a deep scan on your system and remove any potential infections and spyware.

3) Reinstall Applications

Non-critical applications in a computer are those that are installed by the user. If error 0xc0000142 displays in any of your installed programs, then you should reinstall these programs. Often applications have damaged or corrupted files which can slow them down. To resolve this, follow these steps:

• From Start, click on Control Panel
• Go to Add/Remove Programs and uninstall the programs
• Restart your PC and reinstall the program

The third step is not recommended in case the error is caused by cmd.exe

4) Repair Windows

If the error is still on display despite following the previous steps, then you can repair Windows. This process allows Windows to retain all your data and information by simply replacing the program files and settings with fresh ones. This can stop error 0xc0000142 by allowing the programs access to use necessary files smoothly and effectively.

If you cannot resolve the error in any of these steps, then there is another way to do so if you have a computer that runs the Microsoft Internet Security and Acceleration (ISA) Server 2000. Follow these steps in order to resolve it:

• Make sure that in Program Files and Microsoft ISA Server, a Clients folder exists. The ISA Server service will run on this folder
• Confirm that Administrators and SYSTEM have Full Control assigned in the Program Files/Microsoft ISA Server/Clients folder
• Confirm that Msplat.txt file is in the Clients folder. You can copy this file from other ISA Server computers if it is missing
• If the Clients folder is damaged or is missing, or if you can’t copy the Msplat.tct file from another ISA Server computer, then reinstall the ISA Server 2000

Error Code 0x80240016 - What is it?

Error Code 0x80240016 is an error that appears when the Windows Update tool is unable to complete its operation. While it most commonly occurs in Windows 10, versions of this error are also present in past Windows systems, as well. The steps to resolve the error are the same for each of these systems. Common symptoms include:

• Inability to complete the Windows Update process
• Sluggishness or freezing
• Crashing of your programs
• The message that states “IMAP_LOGINFAILURE”

There are a number of different issues that can cause Error Code 0x80240016, so it is important to follow the steps below to address each of them in turn. While basic users can implement several of the methods, some of the methods may require advanced skills or knowledge. If needed, always get in touch with a qualified Windows repair professional to assist you in the process of error resolution.

Solution

Error Causes

Error Code 0x80240016 happens when the system believes that another installation is already occurring on your device while the Windows Update tool is attempting to run the installation of its own updates. While there may not always be an actual installation going on that prohibits Windows Update from running, several programs can leave traces of background activity that prevent Windows from proceeding as necessary.

Malicious software can also cause your system to believe that files are in use, so several of the methods to fix the error can address this particular set of issues.

Further Information and Manual Repair

There are a number of different background issues that can cause Error Code 0x80240016 to appear on your machine. Follow the steps below to address each aspect of the error code, making sure to restart your computer after each attempt. If you have difficulty in completing these steps, contact a qualified technician to assist you.

Here are the top methods to resolve Error Code 0x80240016:

Method One:  Use the Troubleshooting Tool in Windows Update

The first step to addressing Error Code 0x80240016 is to open up the Windows Update tool and click on the option to run the Troubleshooting Wizard. This can identify many of the issues associated with the error. If this tool makes any changes, make sure to restart your computer after it finishes.

Method Two:  Run the Registry Repair Tool

The registry repair tool can be a great resource for Error Code 0x80240016. Use it to run a scan on all of your registry entries and to repair any that may be extraneous, faulty, or missing. This step may take some time, so be prepared to wait a while for it to finish. Always restart your computer after running the registry repair tool so that any necessary changes can fully take effect and be recognized by your device.

Method Three:  Scan Your Computer for Malicious Software

Use the Microsoft Security Essentials tool to perform a scan of your computer to see if any malicious software has changed or corrupted your system files. Once all the files had been scanned and problems have been addressed, you can restart your computer to see if the error has been successfully resolved. You can also download a powerful automated tool to rectify Windows 10 error code 0x80240016.

Method Four:  Update Your Drivers and Perform Updates for Your Software and Operating System

Another method that can help to address Error Code 0x80240016 is to open up your driver settings from the control panel and scan to see if any updates are needed. If there are updates waiting to be installed, go ahead and perform those updates first, then restart your computer.

Next, check your Windows Update tool to see if there are any program or system updates that need to be performed. Allowing updates to stack up can cause a number of errors on your system, so it is important to keep your updates in check. Restart your computer after you finish this process.

Method Five:  Backup Your Files, Then Reinstall Your Operating System Version

If none of the above methods have completely fixed the problem, you may need to reinstall your operating system. Before doing so, make sure that you have a backup copy of any important programs and files so that you don’t lose anything during the fresh installation.

The Photos app in Windows 10 is the default photo viewer. However, there are times when it might encounter some problems while you use it. One of these problems in the Photos app reported recently is where users try to export or share the images and videos from the app but weren’t successful in doing so. This can be really quite a hassle in opening images on your computer, especially since the Photos app is the default photo viewer in Windows 10 and if you don’t have any other photo viewer app installed. This kind of problem in the Photos app can be noticed when you try to use the “Remix” function for both photos and videos. In other words, this problem can occur with just pictures, videos, as well as a combination of both. So if you are trying to watch a video using this app, then you wouldn’t be able to play it. In such a case, the only thing you can hear is the audio but you wouldn’t see anything except for a hazy purple screen that has not export or share option. There are several possible causes for this problem and it could be fixed by updating the display driver/graphics driver or disabling the hardware-accelerated video encoding. You could also try updating or resetting or reinstalling the Photos app. For more details, follow each one of the suggestions provided below.

Option 1 – Try to update the Graphics driver

You can try to update your Graphics card driver using the Device Manager in your computer to resolve the blank dialog boxes problem or you can also go directly to the website of your graphics card manufacturers like NVIDIA, Intel, or AMD and go to the section called Drivers then check if there’s a new available update – if there is, download and install it. To update your Graphics driver via Device Manager, refer to these steps:

• First, boot your computer into Safe Mode.
• After that, tap the Win + R keys to launch Run.
• Type in msc into the box and tap Enter or click OK to open the Device Manager.
• After that, a list of device drivers will be displayed. From there, look for the Display Adapters and click on them.
• After that, right-click on each entry under the Display Adapters and select the “Uninstall Device” option from the menu.
• Now restart your computer.
• After restarting your computer, go to the Settings app and Check for Updates in the Windows Update section.

Option 2 – Try disabling the hardware-accelerated video encoding

The next thing you can do to fix the problem is to disable the hardware-accelerated video encoding in your computer. To do that, follow these steps:

• Open the Photos app and click on the visible three dots located in the upper right corner of the app and then select Settings.
• From there, you should see the version number of the app in the “About this app” section. So if your app is version 2018.18071.****0.0 or greater, you should see the Video section which has a toggle button.
• Turn that toggle button off to disable hardware-accelerated video encoding in the Photos app. This should fix the problem, if not, simply follow the next given options below.

Option 3 – Try to update the Microsoft Photos app

• Open the Microsoft Store and click on the three horizontal dots for the menu located on the top right portion of the window to see the options.
• Next, select Downloads and updates and then click the Get updates button in the top right. This will install any pending updates for all the apps including the Microsoft Photos app using the Microsoft Store.

Option 4 – Try resetting the Photos app

• To get started in resetting the Photos app, open the Windows 10 Settings.
• Then go to Apps > Apps & features.
• After that, scroll down until you see the Photos app option – click on it and open its Advanced options.
• From there, you will see the Reset button, click on it and click and then click on it once more to confirm.

Note: The process may take a couple of minutes to complete. Once it’s done, open the pictures again using the Photos app.

Option 5 – Try reinstalling the Photos app

If none of the options given above worked, then you might want to consider reinstalling the Photos app. Unlike what most users think, it isn’t really that hard reinstalling preinstalled apps as you have the Windows PowerShell for that. To use this program in reinstalling the Photos app, follow these steps:

• Open the Windows PowerShell program with admin privileges and key in the following command:

Set-ExecutionPolicy Unrestricted

• After that, execute this second command to re-register and reinstall the Microsoft Photos app.

Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml"}

Note: In the command given, do not forget to replace the “PackageFullName” with the actual package name for the Photos app. After executing the command, it will uninstall the Photos app from your computer so you need to install it again from the Windows Store by simply looking for it. Once you found it, just click on install to start the installation process.

Error Code 0x80240017 – What is it?

Error code 0x80240017 is associated with installing or updating a Windows Store app. This error is more common in Windows 8 and Windows 8.1. It appears due to missing certain system files and also corrupt registry.

Common symptoms

• When you try to install a Windows Store app on a PC running Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2, the installation fails and you receive an error message: 0x80240017
• Certain apps may become unresponsive.
• You may not be able to download apps or Windows update
• You may have difficulty updating or installing and uninstalling other built-in programs inside Windows 8 and Windows 8.1.
• When you have multiple applications running, you may experience crashes and freezes.

Solution

Error Causes

The error code 0x80240017 in Windows 8.1 or Windows 8 usually appears due to the fact that your system has changed after you installed a third-party application. It might also appear if registry entry has changed after a reboot of the operating system and you do not have the required permissions. Other causes may be due to:

• Corrupted, broken, or missing system files.
• Malware/spyware infection or virus attack
• Hardware/RAM decline
• Fragmented file
• Unnecessary or redundant program installations

Further Information and Manual Repair

Repairing Error Code 0x80240017 in Windows 8/Windows 8.1

Method 1:

Resetting Windows Store app:

1. Press and hold the Windows key and press R. This will open up the Run command
2. Now, type exe and hit Enter
3. Just wait for it to finish and it will re-launch Windows Store. Now, try and install the app you were trying to install which was previously showing an error.

This basic solution will delete the cache and reset Windows Store.

Method 2:

Using Windows troubleshooter:

1. Click on Search on the Charm bar and type Troubleshooting. Click on the very first option.
2. A new window will open. Click View all from the left pane.
3. Scroll down to the bottom and click on Windows update.
4. Troubleshooter window for Windows update will pop up. Click on NEXT. It may ask you for administrative permission.
5. The troubleshooter will automatically detect problems and fix them.
6. Now, close this window and try download/install the app which was previously showing an error.

Method 3:

Disable Proxy Settings: Disable proxy server on Internet Explorer

1. Press the Windows + R Run window will appear.
2. Type cpl and hit Enter
3. Click the Connections tab and click LAN settings
4. Under proxy server uncheck “Use a proxy server for your LAN”
5. Click OK

Now try to install apps from Windows Store.

Method 4:

Boot in Safe Mode:

1. Open Run command as previously described
2. Type MSConfig
3. Click on the Boot tab
4. Tick Safe boot in Boot option
5. Select Network
6. Click Apply and OK
7. Reboot your system

Your system will boot in Safe mode with Networking. You may now try and open Windows Store and should not see any errors.

Method 5:

Note: It is recommended that you back up your files and folders before attempting this step:

1. Move the mouse cursor over to the upper right side of the screen.
2. A menu will pop up on the left. Click on the “Settings” feature on the menu.
3. On the Settings window, click on the “Change PC settings.”
4. Now, left-click on the “Update and recovery” feature.
5. For the next step, left-click on the “Recovery” feature.
6. There is an option here saying “Refresh your PC without affecting your files.” There, left-click on the “Get started” button.
7. Now, follow the instructions on the screen to finish the Refresh process.
8. After the Refresh process has finished restart your Windows 8.1 or Windows 8 device.
9. Check again to see if the error 0x80240017 has been fixed.

If you do not possess the technical expertise required to accomplish this yourself or do not feel comfortable doing so, download and install a powerful automated tool to get the job done.

When you have to connect to a drive that’s on a different computer or on external storage, that’s where the mapped network drives come in. Mapped network drives make accessing files a lot easier. However, there are times when it won’t work for some reason. Windows will notify you about the unavailability of mapped network drives in several ways. For one, Windows might display a red X on the network drives or it could be that its status will be unavailable when you try to use it from the Command Prompt or via a notification. It is recommended that you run a few scripts when you log in to your PC as it may so happen that the network drive takes more than usual to connect. Before you start troubleshooting the problem using the given options below, keep in mind that some workouts might only work under certain scenarios. You might need some network access at logon or you might need access to the Group Policy settings. So you need to choose what you prefer more. You can try the given workarounds below if the mapped network drives are not showing or connecting or working on your Windows 10 computer. These workarounds use scripts to make sure that you are connected to them as soon as you start to use your PC. As mentioned, before you can troubleshoot, you need to create scripts first. There are two scripts here namely MapDrives.ps1 which is executed by the second script named MapDrives.cmd and is done at a regular and non-elevated Command Prompt. Follow the steps below to get started.

• You have to create a script file named “MapDrives.cmd” first and then save it on a place where the files are safe. To do that, open a text editor like Notepad and then copy and paste the following script:

PowerShell -Command "Set-ExecutionPolicy -Scope CurrentUser Unrestricted" >> "%TEMP%StartupLog.txt" 2>&1 PowerShell -File "%SystemDrive%ScriptsMapDrives.ps1" >> "%TEMP%StartupLog.txt" 2>&1

• After that, save the file and name it “MapDrives.cmd”.
• Next, create a script file named “MapDrives.ps1” and then copy and paste the following content. Just make sure to save both scripts in the same folder.

$i=3 while($True){     $error.clear()     $MappedDrives = Get-SmbMapping |where -property Status -Value Unavailable -EQ | select LocalPath,RemotePath     foreach( $MappedDrive in $MappedDrives)     {         try {             New-SmbMapping -LocalPath $MappedDrive.LocalPath -RemotePath $MappedDrive.RemotePath -Persistent $True         } catch {             Write-Host "There was an error mapping $MappedDrive.RemotePath to $MappedDrive.LocalPath"         }     }     $i = $i - 1     if($error.Count -eq 0 -Or $i -eq 0) {break}     Start-Sleep -Seconds 30 } Note: Now that you’ve created the script files, it’s time for you to proceed to the options given below.

Option 1 – Try creating a startup item

Note that this option only works on devices that have network access at login. So if it’s not there, the script will fail to reconnect the network drivers automatically. To create a startup item, here’s what you have to do:

• Open the Startup folder located at %ProgramData%MicrosoftWindowsStart MenuProgramsStartUp.
• From there, copy and paste the MapDrives.cmd.
• After that, open the Scripts folder located at %SystemDrive%Scripts copy-paste MapDrives.ps1 and then copy and paste MapDrives.ps1 in there.

Note: After you complete the steps above, a log file named “StartupLog.txt” will be created in the %TEMP% folder. Now all that’s left for you to do is to log out of your computer and then log back in. This will ensure that the mapped drives are open.

Option 2 – Create a scheduled task

It is possible to create a scheduled task that runs as soon as you log in to your computer. To create a scheduled task, follow the steps below.

• You have to copy the MapDrives.ps1 script file to the scripts folder of Windows located at %SystemDrive%Scripts.
• After that, open the Task Scheduler and select Action > Create Task.
• Next, type a name and description of the task in the General tab.
• Then click on the Change User or Group button and select a local user group and click OK.
• Now check the box labeled “Run with highest privileges” and switch to the Triggers tab.
• From there, create a new trigger with the “At Logon” option in the Begin the task drop-down menu and then click OK.
• After that, switch to the Actions tab and create a new action then choose to Start a program.
• Next, type “Powershell.exe” in the Program/Script field, and in the Add arguments (optional) field, type the following:

-windowsstyle hidden -command .MapDrives.ps1 >> %TEMP%StartupLog.txt 2>&1

• And in the Start in the (optional) field, type “%SystemDrive%Scripts” as the location of the script file.
• Now under the Conditions tab, select the “Start only if the following network connection is available” option and then select Any connection and click OK.
• Restart your computer or log off from your account and then log back in so that the task will be executed.

Option 3 – Use the Group Policy settings

You need this option if the mapped network drives are defined via Group Policy settings. You have to update the action of the drive maps to Replace. As a result, it will delete the existing mapped drive and create the mapping on each logon again. However, any settings on the mapped drive that are changed from the Group Policy settings will be gone on each logon. So if the changes don’t work, you need to run the gpupdate command together with the /force parameter in order to refresh the Group Policy setting quickly.

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!