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PFN_LIST_CORRUPT Blue Screen - What is it?

PFN_LIST_CORRUPT is a blue screen of death error code. It occurs when the PFN (Page Frame Number) list becomes corrupt. The Page Frame Number is basically used by your hard drive to determine your location of each one of your files on the disk. This error may occur when starting up the program or while using it. Blue screen of death errors occurs without any warnings. The program disrupts all of a sudden and the computer screen turns blue.

Solution

Error Causes

PFN_LIST_CORRUPT Blue Screen error may occur due to multiple reasons. Some of the common reasons include:

• Hardware problems
• Device driver issues
• Registry problems
• Viral Infection

It is recommended to resolve the PFN_LIST_CORRUPT Blue Screen of Death error immediately without any delay virtually because this error can be quite fatal to your PC. It can pose serious threats to your system like system freeze, crash, failure, and valuable data loss. Furthermore, if the error is related to viral infection, it can expose you to privacy issues, data breaches, and cybercrime too.

Further Information and Manual Repair

This is a critical PC error but easy to resolve. You don’t need any technical expertise to fix this error on your PC. Here are some quick and easy methods to resolve PFN_LIST_CORRUPT Blue Screen error:

Method 1: Install Compatible Device Drivers

Sometimes when new hardware is added to the PC, you need to install updated versions of the device drivers to ensure there are no incompatibility issues. Incompatibility between the hardware and device drivers may generate PFN_LIST_CORRUPT Blue Screen of death error on your screen. To resolve, it is advisable to download and install the latest updated versions of the device drivers from the manufacturer’s website.

Method 2: Scan for Viruses

PFN_LIST_CORRUPT Blue Screen of Death error may occur due to viral infection too. Viruses and spyware enter your PC when you log on to unreliable websites and download programs from there or open phishing emails on your PC. These viruses corrupt and damage programs and files resulting in such errors. To fix the issue, you need to install a powerful antivirus and ensure all kinds of viruses and spyware are detected and removed from your system.

Method 3: Clean and Restore the Registry

PFN_LIST_CORRUPT Blue Screen error indicates poor PC maintenance. When you don’t clean and remove unnecessary and obsolete files like junk files, bad registry keys, cookies, internet history, temporary files, and invalid entries from the registry, the registry overloads and gets damaged. These files accumulate taking up a lot of disk space and also corrupt system files. If these files are not removed timely, it results in registry issues like a blue screen of death errors and run-time errors. To remove these files and clean the registry, you need to install a powerful registry cleaner. Whether the underlying cause for PFN_LIST_CORRUPT Blue Screen of Death error on your PC is viral infection or registry issues, to resolve the BSOD error code in seconds download Restoro. This is a cutting-edge and multi-functional PC fixer deployed with both an antivirus and a registry cleaner. Additional features include a system optimizer too. It is user-friendly and easy to operate. You can download it on all Windows versions without any hassle. It is safe and bug-free. The registry cleaner feature scans and removes all unnecessary files, cleans and repairs the registry while the antivirus utility simultaneously removes all kinds of malicious software including spyware, viruses, Trojans, and malware. Click here to download Restoro now and resolve the PFN_LIST_CORRUPT Blue Screen of Death error immediately!

KMODE_EXCEPTION_NOT_HANDLED – What is it?

Some users installing or upgrading to Windows 10 experienced the theKMODE_EXCEPTION_NOT_HANDLED Blue Screen of Death (or commonly known as BSOD) error. This error can be due to different types of things, ranging from software to driver issues. When you experience this BSOD error while trying to install Windows 10, it will prompt you to restart your computer every single time you experience it. In most cases, you will also not be able to proceed with the Windows 10 set-up.

Solution

Error Causes

The “KMODE_EXCEPTION_NOT_HANDLED” error is normally caused by:

• Hardware incompatibility
• A faulty device driver or system service

Further Information and Manual Repair

You won’t be able to successfully upgrade or set up Windows 10 if you continue to encounter this BSOD error. Note that this error will always prompt your computer to restart every time it happens, preventing you from completing the Windows 10 set-up.

If you’re not tech-savvy or not capable of debugging this issue, it’s highly advisable to proceed with the basic troubleshooting techniques available in this link.

After troubleshooting, below you’ll find a few solutions to rectify the issue.

Method 1 – Check The Cause of The BSOD Error

Two common causes of the KMODE_EXCEPTION_NOT_HANDLED issue are hardware incompatibility and faulty device driver or system service.

If you experience this error, check first if any of your newly installed hardware is compatible with Windows 10. You can find the required hardware for Windows 10 from this link. 

If all your hardware is compatible with Windows 10, you might need to check the device driver or system service. Review the bug check message. If any of the drivers you have is listed in the message, either disable or uninstall them before upgrading or setting up Windows 10.

You might also find it useful to check the System Log available in the Event Viewer for other error messages that can help you figure out the driver or device that’s causing the error. Running hardware diagnostics can also be useful.

Method 2 – Disable (or preferably uninstall) Software Before Upgrading

If you’re upgrading Windows 10 from Windows 7 or Windows 8.1, you might need to disable or uninstall the software first. First, try uninstalling your Antivirus utility before starting the upgrade. Restart a few times before starting the Windows 10 installation. If you’re upgrading using the Windows 10 update, make sure that you disconnect from your Wi-Fi or Internet LAN (Ethernet) connection as soon as the download reaches 100% before attempting to start the set-up. Other users also reported that the cause of the KMODE_EXCEPTION_NOT_HANDLED issue is BitDefender. If this is what happened in your case, it will show in the error message such as KMODE_EXCEPTION_NOT_HANDLED (bdselfpr.sys). Users reported that a common solution for this is renaming the file. In the case of BitDefender, try renaming it to bdselfpr.s__. However, make sure to do this cautiously. Sometimes, renaming a file will even do more damage than good.

Method 3 – Disable/Disconnect From Hardware

If you’re connected to any general USB devices (such a smart card reader), disable it. If your computer is connected to other external devices, disconnect all of them. Examples of this include gaming controllers, printers, external hard disk, USB keys, and other non-essential devices).

Method 4 – Other Troubleshooting Steps

Other troubleshooting steps include:

• Upgrade using an .ISO file, instead of directly upgrading from Windows Update. When you do this, make sure you’re disconnected from the Internet during installation. If the process started and you forgot to disconnected, it’s best to restart the installation.
• If you’re connected to a domain while trying to set up Windows 10, disconnect and use a local account.
• If you’re using a SCSI hard disk, connect a thumb drive with the drivers for your storage device. While Windows 10 is setting up, click on the Custom Advanced Option. Using the thumb drive, use the Load Driver command to load the SCSI drive.
• Another possible cause of this error is due to BIOS incompatibility. BIOS issues can be solved by upgrading your version of your system BIOS. If you don’t know how to do this, refer to your BIOS manufacturer’s website.

Method 5 – Use A Trusted Automated Tool

If you still experience the error after doing the methods above, you might want to try a powerful and trusted automated tool to fix the job.

What Is 0xc000001d Error?

The 0xc000001d error is a common yet critical error that can occur when Windows is damaged or fails to work as a result of either missing system files or corrupt system components. This error can be extremely dangerous to Windows as it can inflict major damage to data and component files.

Error Causes

A 0xc000001d error code can occur because of a number of reasons, of which corrupt registry files are the most common, and about 94% of the time, this results in the error. However, virus infection or an adware or spyware invasion can also result in this error. Outdated drivers and missing DLL files can also be critical and will lead to this error causing major damage to computer files. Contrary to popular belief, incomplete installation and unfinished uninstalls can also because of this error. Other causes include improper shutting down of computers and improper hardware or software deletion.

Solution

Further Information and Manual Repair

Because of this 0xc000001d error code, Windows can fail in starting some processes and the system’s performance can significantly slow down. In some cases, Windows has problems starting up and the system can freeze. Lastly, this error code can even result in the Blue screen of death error message, just like other critical Windows errors. If any of the above problems and symptoms occur in your PC, then you should immediately seek to resolve this problem. In order to resolve this 0xc000001d error code or repair the corrupted and damaged Windows files, you will need a 0xc000001d repair tool. There is more than one method of treating this kind of error code, and here is how you can manually do it:

• Start the computer and log in as administrator
• Go to the start button and select All Programs. Go to Accessories, System Tools, and then System Restore
• Click on System Restore and in a new window, select the ‘Restore my computer to an earlier time’ option and click Next
• On the new confirmation window that appears, click Next
• Restart your computer after the restoration has been completed

Another way to manually repair this 0xc000001d error code is to:

• Manually edit the Windows registry
• Update all the drivers for the device

If you have recently installed a new internal or external hard drive or SSD and you’ve noticed that its status on the left side of the Disk Management tool states “Unknown Not Initialized”, this indicates that Windows can’t initialize the disk and that you won’t be able to use this new SSD or hard drive. You can encounter this kind of issue randomly and not just with a new hard drive or SSD but also with existing drives. There are times when you won’t be able to find your drive or partition in the File Explorer. In such a case, you have to check the Disk Management if your drive or partition is there physically. You also have to check if you can see it as Not Initialized. If it is, then this means that the disk or partition does not have a valid signature that is if it’s not registered with the system properly. Note that a disk is registered when you format it at least once so if the disk was available before, then it could be somehow corrupted. To resolve the problem, you can try to initialize the disk manually or bring it online and add a drive letter. You can also try checking the Device Manager for issues or check the cable physically.

Option 1 – Try to manually initialize the disk

Since initializing the disk is the most common way to resolve the “Unknown Not Initialized” error, this is what you have to try first.

• To initialize the disk manually, you have to open the Disk Management from the WinX menu by tapping Win + X keys and selecting Disk Management.
• From there, you can find the non-initialized disk. Right-click on it and select the “Initialize Disk” option.
• Next, select the partition style. It is recommended that you use the MBR option instead of the GPT or GUID Partition Table.
• Now click the OK button. Your hard drive or SSD should now initialize without any problem.

Option 2 – Set the disk Online and add the Drive letter

• If the disk appears to be offline under Disk Management, right-click on it and select the Online option.
• On the other hand, if the disk is already set Online but does not have a drive letter, right-click on it and select the Change drive letter and path option.
• Select a letter that is not allocated yet.
• Once you’re done, you have the option to format the disk in either NTFS or FAT32 but if you are using a 64-bit computer, make sure that you opt for NTFS.

Option 3 – Try to check any issues in the Device Manager

It is also possible that the hard drive is not working properly due to some driver issues. Thus, it’s better if you check the Device Manager and see if that drive is listed with a yellow exclamation mark next to it. And if that’s the case, you have to right-click on that drive and select the Uninstall drive option. After that, click on Action and then run the Scan for hardware changes. It should fix the problem.

Option 4 – Try to physically check the cable

You might also want to check the physical status of the wires and see if they are connected properly or not. Specifically, you have to check two cables, such as:

• The first one is the power cable that’s connected to your SMPS.
• Next is the one that’s connected to your motherboard.

If any of the two cables are not working or missing, then it’s no wonder why your drive has an “Unknown Not Initialized” status. Thus, you need to have them replaced to fix the problem.

As in previous Windows 10, inside Windows 11 also when you press the ALT + TAB key combination you will get a preview of all running applications along with all Browser tabs so you can go through them and pick the one you want to switch to. Alto, I personally am a big fan of alt-tabbing, I must admit that I am not a big fan of having multiple browsers tabs on screen when I do press key combo. Luckily there is a very easy way to turn this feature off. Turning browsers tabs thumbnails off

1. Press ⊞ WINDOWS + I to open settings
2. Click on System in the sidebar
3. Scroll down and select Multitasking
4. Find Alt + Tab section and click on the drop-down menu
5. Pick Open Windows Only
6. Close settings

Now when you press the ALT + TAB key combination you will still see your browser but only an active tab in it instead of all tabs as different preview thumbnails.

A couple of Windows 10 users recently reported getting an error that says, “The group or resource is not in the correct state to perform the requested operation” while opening UWP Applications as well as accessing the File Explorer. You can encounter this kind of error mostly on File Explorer, Microsoft Store application, and other UWP applications. This indicates that this error occurs during both the Windows Classic Application and the Universal Windows Platform Applications. There are several ways to fix this error. You can try to run a System File Checker scan, or run the DISM tool or the Program Compatibility troubleshooter or Windows Store Apps troubleshooter or try to reset or reinstall Windows 10 or the affected application that's not working. However, before you do any of these troubleshooting tips, you can try to perform System Restore first as it could undo the changes you’ve made in the system which might have caused the error.

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.

If System Restore wasn’t able to fix the error, then you can refer to each one of the following options.

Option 1 – Try to use the DISM tool

You might want to repair potentially corrupted files in your system as having them could also trigger the “The group or resource is not in the correct state to perform the requested operation”. 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 2 – Run the System File Checker Scan

Aside from the DISM tool, you can also run a System File Checker scan. It is another 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 that might be the cause why you’re getting the error. 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

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 3 – 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. In addition, you can try to run the Windows Store apps troubleshooter as it can also help you resolve the problem.

Option 4 – Reset your computer

• Tap the Win key or click on the Start button located in the Taskbar.
• Then click on the Power button at the bottom right portion of the screen.
• Next, press and hold the Shift key on your keyboard and then click on Restart. This will restart your Pc into the Advanced Startup options.

Note: Once you have access to the Advanced Startup options, you have to go to the setting which allows you to Reset your Windows 10 PC. All you have to do is select Troubleshoot > Reset this PC to reach the following screen

• Afterward, select either the “Keep my files” option and then proceed to the next on-screen instructions that follow to reset your Windows 10 computer without losing your files.

As you know, you can encounter Blue Screen errors at any given point after your computer boots up and can just reboot it randomly which results in loss of unsaved work. One of these Blue Screen errors is the “REGISTRY_ERROR”. This kind of Stop error has a bug check value of 0x00000051 which indicates your computer’s registry has encountered a severe error. There could be a number of causes for this error but at the time of writing, it is quite difficult to narrow them down to one component. If you face this kind of Blue Screen error, worry not as this post will guide you in fixing it. As mentioned, this error indicates that there is something wrong with the registry, particularly an I/O error while it tried to read one of its files. This may be caused by hardware issues or file system corruption. It could also be due to failure in a refresh operation which is only used by the security system and only when resource limits are encountered. To fix the Registry_Error Blue Screen, you can try to use the CHKDSK utility or the System File Checker, or the DISM tool or run the Blue Screen troubleshooter. You may also try to reset your computer or repair Windows by using installation media.

Option 1 – Run the Check Disk utility

The first thing you can do to fix the REGISTRY_ERROR Blue Screen error is to run the Check Disk utility. How? Follow these steps:

• 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 <Drive Letter>: /f /r /x /b
• 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 – Run the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors like REGISTRY_ERROR. It can be found in the Settings Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

Option 3 – Run System File Checker

• Open Command Prompt with admin privileges.
• After that, execute this command: sfc /scannow
• Once the scan is completed, restart your computer and then check if the REGISTRY_ERROR is now fixed.

Option 4 – Run the DISM tool

You can try running the Deployment Imaging and Servicing Management or DISM tool to fix the REGISTRY_ERROR Blue Screen error. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish. Once it’s done, restart your computer.

Option 5 – Reset your computer

• Tap the Win key or click on the Start button located in the Taskbar.
• Then click on the Power button at the bottom right portion of the screen.
• Next, press and hold the Shift key on your keyboard and then click on Restart. This will restart your Pc into the Advanced Startup options.

Note: Once you have access to the Advanced Startup options, you have to go to the setting which allows you to Reset your Windows 10 PC. All you have to do is select Troubleshoot > Reset this PC to reach the following screen Afterward, select either the “Keep my files” option and then proceed to the next on-screen instructions that follow to reset your Windows 10 computer without losing your files.

Option 6 – Try to perform repair install by creating a Windows 10 installation media

• Click this link and then click the Download Tool Now button.
• Next, click the “Use the tool to create installation media (USB flash drive, DVD, or ISO file)…” option and follow the next given instructions on the screen.
• Now select the ISO file option in step 5.
• After that, you should now have an ISO file.
• Next, go to the location where you’ve downloaded the ISO file.
• Then right-click on the Windows 10 ISO file and select the Open with option and then select File Explorer.
• Now click on “setup.exe” and follow the next instructions that appear on the screen. When asked, you have to select either Nothing (clean install) or Keep personal files only option. Take note that you must not select the “Keep personal files, apps, and Windows settings”.

Windows Setup in Continuous Reboot Loop – What is it?

After upgrading to Windows 10 operating system from Windows 7 or Windows 8/8.1, a lot of Windows users are complaining about the Windows setup in a continuous reboot loop. The computer would just keep on rebooting every time the machine is booted and this incites frustration for a lot of Windows users.

Solution

Error Causes

When Windows launched the third update for Windows 10, users trying to upgrade to Windows 10 encountered an endless reboot loop problem. The computer will crash repeatedly. The KB3081424, which is a roll-up of bug fixes of Windows 10, continuously fails once you start the update process and then triggers a message showing: “We couldn’t complete the updates, undoing the changes.” The undoing process will then cause a system reboot mandatorily.

Once you log back on your computer again, the Windows 10 update will try to reinstall KB3081424. You will not be able to stop the update which will cause your Windows setup in a continuous reboot loop.

The KB3081424 will not be successfully installed since if it fails for the first time, that initial failure can be detected to create a bad entry in your Windows 10 registry. This will then prevent your subsequent attempts to reinstall KB3081424 to make it work correctly.

Further Information and Manual Repair

In order to fix the problem of Windows 10 setup in a continuous reboot loop, there are a few methods you can try. Try following these simple steps and you’ll be able to get rid of the problem.

Note: If you’re not highly confident to solve this issue on your own, it is highly recommended to consult an authorized computer technician who would be knowledgeable enough to fix the issue for you. In addition, you can also use a system optimizer to resolve the issue.

Method One: Check For Windows Update

Microsoft Windows released an updated fix for the Windows setup in continuous reboot loop problem. You can try fixing the issue through Windows Update.

1. Open Settings
2. Go to Update & Security
3. Select Windows Update then choose Check for updates

At this point, an additional update will be installed and downloaded to your operating system to resolve the continuous reboot loop problem.

Method Two: Eliminate Bad Registry Entry

Before KB3081424 attempts to install again, you can try doing this solution:

1. Click on the Start menu then type regedit
2. Once the window opens, go to HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionProfileList
3. Create a backup for your registry key (since this process is a bit risky). Select ProfileList then click on File and Export then choose your backup name.
4. From the ProfileList IDs, remove anything with ProfileImagePath in it.
5. Close Regedit then reboot. By this time, the KB3081424 should properly install.

Method Three: Perform A Startup Repair

Another thing you can try to solve the Windows setup in continuous reboot loop problem is to perform a startup repair from a working computer.

1. Ensure that all unnecessary devices are disconnected from your computer as your computer might detect them.
2. If you are connected to a network, you need to disconnect from this as well.
3. On a working computer, download the Windows 10 ISO then you can perform a startup repair.
4. Boot your computer from the Windows 10 DVD.

To change your BIOS option to boot from the Windows 10 DVD, follow these steps:

1. Boot your computer then press the F2 function key to enter setup.

NOTE: You must do this quickly since the BIOS loads rapidly.

2. Once you’re inside the BIOS, navigate to the Boot Configuration screen. On this screen, you’ll be able to change the first device to be loaded.
3. Go to Removable Devices then hit Enter. Removable devices could either be a thumb drive or DVD. Select DVD to put it at the top and be the first boot device.
4. Save your changes by pressing on the F10 function key. A setup confirmation box will appear with a message Save configuration changes and exit now. Select Yes.
5. Exit BIOS by pressing on the ESC key. You should be prompted to boot from the Windows 10 DVD at this point.

If you're not able to execute the aforementioned processes on your own, get help or download and install a powerful system optimizer to assist with the windows continuous reboot loop process and other Windows 10 error messages.

Error Code 0x801901F7 – What is it?

Error code 0x801901F7, also known as “The Server Stumbled” error because it shows a message saying “The Server Stumbled. We all have bad days” is associated with Windows Store. Server Stumbled Error 0x801901F7 is an error related to the MS server. The error occurs due to damaged registry files, malware, virus, and corrupted data. You should fix this error to prevent a system crash or a BSOD error. There are some things you can do to fix it. These are not so complex. So, anyone can try these methods to fix error 0x801901F7. Common Symptoms for error 0x801901F7:

• Problems with Windows startup
• System becomes very slow or the system freezes
• Blue screen of death appears
• Windows fails to start some process due to Stop error code 0x801901f7

Solution

Error Causes

• This error is generally caused by corrupt registry files.
• Virus infection can cause this problem.
• Outdated driver, missing .DLL files may also cause this error.
• Microsoft server overload may cause this problem as well.
• Incorrect configuration may cause this problem.

Further Information and Manual Repair

To fix error 0x801901f7, there are four methods listed below. Some might work for you and some might not. Please try all of them to fix this error.

Method 1:

Basic method to fix error code 0x801901F7: Resetting Windows Store Cache Most of the time clearing or resetting the cache helps. It doesn't always work, but you should try this first before moving on to some advanced methods which are mentioned below. To reset the Windows Store cache please follow the simple steps below

• Open RUN by searching or pressing "Windows Key + R"
• Type "wsreset.exe" and press Enter or click on OK.
• Windows Store will open automatically along with a command prompt.
• This will reset Windows Store and you might see it loading as it should.

This method might work but if it fails to solve Error 0x801901F7 then follow the method below.

Method 2:

Advanced method of fixing error code 0x801901F7: Deleting Windows Store database file. By using this method, you will be deleting the database file for Windows Store. This file is located on your C drive or the drive where you installed your Operating System. Follow the steps below.

1. Navigate to C:WindowsSoftwareDistributionDataStoreDataStore.edb.
2. Delete DataStore.edb file from there.
3. Now Open Windows Store and see if you still get error code 0x801901F7.

The Datastore.edb file that you deleted will be automatically created once you perform Step 3 which is launching Windows Store. If you still cannot get this error away then Close Windows Store and Reboot your PC then Launch Windows Store Again.

Method 3:

Modifying Windows update properties: Perform the steps below only if the above-mentioned methods fail. You will be tweaking a few things in the Windows update to see if it helps.

1. Open Task Manager by right-clicking on Taskbar, then click on Task Manager.
2. Go to Services Tab. Click on Open Services at the very bottom of the Window.
3. Now a new window will pop up. Scroll down & find "Windows Update" from the list.
4. Double click on Windows update to open up its Properties.
5. Now from the Startup Type drop-down list, select Automatic. Click on Apply, Start, and then Ok.

Now you need to perform just one more step. Reset Windows Store again (Refer to method 1 for Steps). This should fix your Windows Store error that shows The Server Stumbled with 0x801901F7 Error Code.

Method 4: 

If the error is due to a problem with a driver, then follow the method below to uninstall the current driver:

1. Open the Run command and type “sysdm.cpl” in the text box.
2. Click Enter.
3. Open the Hardware tab on the system properties dialog box.
4. Then press on Device Manager.
5. Double press on Device type and then press on the hardware device that is reporting error code 0x801901F7.
6. Go to the Driver tab and press on Uninstall button to uninstall the device driver completely.
7. Now, install the new driver on your computer.
8. Restart your computer.
9. Run virus scan of your PC
10. Try using a different USB port.

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.

Recently, a number of users reported that they were not able to run PLEX and other similar streaming services ever since a Windows Update was automatically installed in the system. The error in these streaming services has something to do with a missing Mfplat.dll DLL file from the Windows Media Feature Pack. On the other hand, some users also reported that the mfplat.dll error occurred on several games as well which used the Media Feature Pack. Usually, the mfplat.dll error is caused by the missing Media Feature Pack in Windows 10. Although most of the time the Media Feature Pack is installed by the application that needs it or through Windows Update automatically, there are just certain installers that do not have it. It could be that the Media Playback service was disabled by a particular Windows Update. Aside from that, the error might be because your computer is using Windows 10 N – a Windows 10 version that does not include the Media Feature Pack by default. Whatever the cause may be, you can troubleshoot the problem with the help of the options given below. But before you go on, keep in mind that downloading the missing DLL file and copying it to the folder of the program where you encounter the error won’t really help and will only make things even more complicated.

Option 1 – Install the Media Feature Pack for Windows 10 N version

As mentioned, the Windows 10 N version does not come with Windows Media Player. Meaning to say, the Media Feature Pack is also not installed by default or won’t be updated by the Windows Update component. So if you are not quite sure what Windows 10 version you currently have installed, refer to these steps:

• Tap the Windows key + S and then type “about” in the search box.
• From the search results, click on the “About your PC” to open the About tab of the Settings app.
• Afterward, scroll down to the Windows specifications and check your Windows version under Edition.

Note: If you’ve determined that your computer is using the Windows 10 N version, you need to install the appropriate Media Feature Pack for your computer. How? Refer to the steps below:

• Click this link to download and install the Media Feature Pack from Microsoft’s official website.
• Upon installation, select the edition you want to install using the drop-down menu and then click on Confirm. Take note that there are few reasons why you’d want to install the older version since most streaming services like PLEX and most games usually require version 1803.
• After that, wait until the request is validated. The download should begin in a few minutes automatically.
• Once the download is completed, open the installation executable file and follow the next on-screen instructions to install the Media Feature Pack on your computer.
• Restart your computer. After your computer has rebooted, open the application where you’re getting the mfplat.dll missing error and then check if the problem is now fixed.

Option 2 – Enable Media Playback via Command Prompt

If you encounter the mfplat.dll missing error when you attempt to run PLEX or other similar streaming service and you’ve already verified that the Media Feature Pack is indeed installed, you might want to try enabling it using an elevated Command Prompt. There are cases when a particular Windows Update ends up disabling the feature and creates the grounds which results in the mfplat.dll missing error. Thus, you can have to enable the feature via Command Prompt.

• Tap the Win + R keys to open the Run dialog box.
• Then type “cmd” in the field and hit Enter to open an elevated Command Prompt.
• Next, click on Yes if a User Account Control prompt pops up.
• After opening Command Prompt, copy and paste the following command and hit Enter to execute it:

dism /online /enable-feature /featurename:MediaPlayback

• Close Command Prompt and then open the app once again to check if the problem is now fixed.

Option 3 – Try extracting a copy of the mfplat.dll file from the windows.old directory

If you encounter the error shortly after you just upgraded to Windows 10 from an older version, the best thing you can do to resolve the problem is to use windows.old directory to fetch an old copy of the mfplat.dll file. To do so, follow the steps below.

• Go to the Windows drive and then look for the windows.old directory where it preserves a copy of your old operating system as well as associated files in case something goes out of hand during the upgrade process.
• After that, open the windows.old folder and then go to the syswow64 folder.
• Next, from the syswow64 folder, copy the mfplat.dll file and paste it to C: windows syswow64.
• Restart your computer and check if the error is now resolved or not.