Software Licensing Service 0xC004F009 Error

0x0000007c error inside Windows 11 is a printer error that is manifested when Windows users are trying to connect to a shared network remote printer. Error is displayed by the message:

Windows cannot connect to the printer. Operation failed with error 0x0000007c.

If you are experiencing this type of annoyance, fear now we are providing you with several solutions to this problem.

Update Windows 11

1. Open the Start menu, click on the settings app
2. Select Windows update tab
3. Click on Check for updates
4. Click on Advanced options
5. Inside select Optional updates
6. If there are optional updates click on Download & Install

Run the printer troubleshooter

1. Press ⊞ WINDOWS + I to open settings
2. Click on Troubleshoot navigation on the system tab
3. Select Other trouble-shooters
4. Click on the Run for printer troubleshooter
5. If the error is found click on Apply this fix

Restart the Print Spooler Service

1. Right-click on the Start button
2. Click on RUN
3. Type in services.msc and press OK
4. Right-click on Printer Spooler service and select Restart

Clear the Print Spooler

1. Open services like in the previous step
2. Right-click Print Spooler and select STOP
3. Open File explorer
4. Navigate to: C:\Windows\System32\spool\drivers\x64\3 (64-bit Platform) C:\Windows\System32\spool\drivers\W32X86\3 (32-bit Platform)
5. Delete everything inside folders
6. Go back to services, right-click on Print Spooler and select RESTART

Reinstall Driver for printer

1. Right-click on Start and select device manager
2. Double click on the Print queues category
3. Right-click on the printer and select Uninstall device
4. Click on Uninstall on prompt
5. Right-click on the Print queues category and select Scan for hardware Changes

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!

What is 0x0000007B Error?

0x0000007B is the most common Windows stop error. The error is displayed on the blue-colored screen which is also called the blue screen of death. You may receive a 0x0000007B error message during Windows XP setup or while running the setup program. The message is often displayed as ‘a problem has been detected and Windows has been shut down to prevent damages’ or ‘inaccessible boot device error’.

Solution

Error Causes

The 0x0000007B error code is usually triggered by:

• Poor Window XP installation
• Registry corruption
• Device Drivers Issues
• Boot sector viruses

Further Information and Manual Repair

The 0x0000007B error makes your system vulnerable and reduces its speed significantly. And besides, you can’t run the programs smoothly on your PC either. Therefore, it’s advisable to fix the error right away. To fix and repair the 0x0000007B error successfully, you must first understand the cause of the error. Let’s take a look at all the solutions available to fix the 0x0000007B error.

Cause: Boot Sector Viruses

Solution: If your computer is infected with boot sector viruses, then you will first have to download a powerful antivirus. After downloading the antivirus program, run it on your PC to check your computer for viruses. Delete the viruses found and click the repair option. Sometimes even an antivirus program may fail to remove the virus and repair the system. In such cases, you must repartition and format your hard disk and also reinstall Windows XP.

Cause: Device Driver Issues

Solution: Device driver issues may occur if the boot controller is not properly configured or the driver is not up to date. If device driver configuration is the cause of the 0x0000007B error on your PC, then all you need to do is restart your PC, and while restarting press F8 to go to the advanced boot options. Now choose the ‘Last Known Good Configuration’ option. After selecting it, boot into windows and then perform a system restore. Now go to Device Manager and perform a driver rollback to reinstall the drivers. This will resolve the configuration issues. However, if you need an updated driver, all you need to do go on the web and download software to update the driver. It is advisable to download software from the manufacturer’s website in order to successfully update the device driver.

Cause: Poor Windows Installation

Solution: In this case, you will have to perform a Windows start-up repair. To do this: boot Windows XP from CD. Press ‘enter’ at setup Windows Screen when prompted. Then press R to repair Windows Installation. This procedure will not delete any user data and files. In fact, it will copy only the original Windows files over the bad or existing ones. Some of the best ways to avoid Ox0000007B blue screen errors are

• To scan for viruses every time you use your PC
• Never open web pages, emails, or download content that you think looks suspicious because that’s probably a virus.
• Always keep your computer updated.

This post will guide you in fixing yet another annoying Blue Screen of Death error, “BUGCODE_USB_DRIVER”. This particular BSOD error occurs due to some issue with usbhub.sys, winusb.sys, or usbport.sys system driver file. When you encounter this kind of Stop error on your Windows 10 PC, it indicates that an error has occurred in the Universal Serial Bus or USB driver. The USB driver is issued by Microsoft themselves and it comes along with the Windows 10 system which is why it is difficult to download its latest version using a web browser. Thus, you need to take some basic steps to resolve the problem. Carefully follow the given fixes below to fix the BUGCODE_USB_DRIVER Blue Screen error and before you proceed, you need to create a System Restore Point, this way you have some backup in case something goes out of hand.

Option 1 – Update the USB Controller Drivers

• First, click the Start button and type “device manager”.
• Then click on the “Device Manager” from the search results to open it.
• From there, look for the “Universal Serial Bus controllers” option and then right-click on each one of the USB drivers and select the Update Driver from the menu.
• Restart your PC and then click the “Search automatically for updated driver software” option.

You also have the option to update the motherboard and the USB driver from the manufacturer’s official website.

Option 2 – Check for any available Windows Updates

Another you can try is to check if there are any Windows Updates available to make sure that your Windows 10 PC has all the latest updates installed. All you have to do is go to Settings > Update &security. From there, just click on the Check for updates button.

Option 3 – Uninstall conflicting programs and services

There are certain programs like VMWare, Virtual Box, Hyper-V Virtualization services that might be in conflict with the USB port drivers on the parent operating system. Thus, you can try uninstalling the aforementioned programs and other similar ones to see if it fixes the BSOD error.

• In the search box, type in “control” and then click on Control Panel (desktop app) among the search results.
• After that, select Programs and Features from the list which will give you a list of all the programs installed on your computer.
• From there, look for the concerned program and select it and then uninstall it.

Note: If you have downloaded the app from the Windows Store, you can simply right-click on it from the application list and then uninstall it. If uninstalling the programs mentioned above didn’t help, you might want to try putting your PC in a Clean Boot State to help you find the faulty program.

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

Option 4 – Modify the Power Settings

• In the Cortana Search box, type “power options” and then select Power Options from the search results.
• After opening Power Options, click on Change plan settings for your selected power plan.
• Next, click on Change advanced power settings.
• Then look for USB Settings and click on it to expand it.
• Now expand the USB selective suspend setting and then disable it.
• After that, click on the Apply and then OK buttons to save the changes made.

Option 5 – Check for any hard disk errors

• On your desktop, right-click on the “This PC” or computer icon and then select Manage to open the Disk Management. Here you get to check your drive’s health.
• Next, click on Disk Management on the left side panel.
• From there, check the state of your drives. If it shows that all your partitions are healthy then it means all is good and that the problem may have something to do with some physical issues with your hard drive.

You might also want to run the CHKDSK utility to help you fix any issues with your hard disk. If your hard drive has issues with integrity, the update will really fail as the system will think that it’s not healthy and that’s where the CHKDSK utility comes in. The CHKDSK utility repairs hard drive errors that might be causing the problem.

• Open Command Prompt with admin privileges.
• After opening Command Prompt, execute the following command and hit Enter:

chkdsk /f /r

• Wait for the process to be completed and then restart your computer.

If you got an error message saying, “Windows Update failed to install error 0x80240034” when trying to update your Windows 10 then it’s probably due to some update services that are failing at some point. In addition, you might also see Error constant WU_E_DOWNLOAD_FAILED with the description that “Update has failed to download”. The Windows Update failed to install error 0x80240034 might be caused by some connection problem or there might be a duplicate update or that installation is not allowed and so on. And so to fix the problem, we’ve prepared some options that could help. Make sure to follow them accordingly but before you proceed, you need to verify if you have a stable internet connection.

Option 1 – Restart your computer and try installing the Updates again

Restarting your computer can also help in fixing the Windows Update failed to install error 0x80240034. There are cases where the issue resolves on its own as it could just be some simple network or PC error.

Option 2 – Try to disable your antivirus program

The Windows Update failed to install error 0x80240034 might be caused by the antivirus program installed in your computer which is why disabling the antivirus program or any security software installed in your computer is always a good idea you can try when the Windows Update process does not go smoothly. So before you try updating your computer again, make sure to disable the antivirus or security program and once the Windows Update is done, don’t forget to enable the antivirus program back again.

Option 3 – Clean up temporary and junk files

• Open Setting > System > Storage from the WinX Menu.
• From there, you will see a list of all the local and connected storage devices along with the details on the free space.
• Now make sure that the Storage Sense feature is turned On then go find a link that says “Free Up Space” and click it to open.
• After that, a screen which is the built-in program in Windows 10 will appear and will scan your computer for the following junk files so you can free up disk space:
• Windows Upgrade Log Files
• The system created Windows Error Reporting Files
• Thumbnails
• Temporary Internet Files
• Previous Windows Installation Files
• Delivery Optimisation Files
• DirectX Shader Cache

Note: Once you’re done freeing up space on your drive, try to run the setup file again.

Option 4 – Run the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter is one of the things you can first check out as it is known to automatically resolve any Windows Update errors like error 0x80240034. 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.

Option 5 – Delete Files from Software Distribution Folder & Catroot2 folders

The downloaded Windows Updates are placed in a folder called “SoftwareDistribution”. The files downloaded in this folder are automatically deleted once the installation is completed. However, if the files are not clean up or if the installation is still pending, you can delete all the files in this folder after you pause the Windows Update service. For complete instructions, refer to the steps below.

• 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 6 – Run the DISM tool

If the first five options didn’t work, then running the Deployment Imaging and Servicing Management tool might help as it can repair the Windows System Image as well as the Windows Component Store in Windows 10.

• After you access the Advanced Startup options, select Command Prompt by using the arrow keys on your keyboard.
• Next, type in this command: DISM /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.

Option 7 – Run System File Checker

Running the SFC scan or System File Checker might also help in fixing error 0x80240034.

• 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.
• Restart your PC.

Option 8 – Try to use the Media Creation tool

The Media Creation tool in Windows allows you to use the ISO installation file to make a bootable device that you can use to install Windows on your PC. Note that this is kind of different from the usual installation process as it could erase your computer’s current settings and data on the primary drive. Thus, before you proceed, you need to backup all your data into some removable drive and then use the Media Creation Tool to make a bootable drive.

• After making the bootable drive, you need to plug it into your computer and then reboot.
• Next, tap the F10 or Esc key to open the boot options.
• Now set the boot priority of the removable drive the highest. Once the setup comes forth, follow the next onscreen instructions and install Windows without any problems.

As you know, each time you log out of your Windows 10 computer, it will take you to the login screen where you can switch users or log back in. But there are instances where Windows 10 remains stuck on the signing out screen, along with a blue spinning circle and all you can see is the process of your computer signing out, however, it does not progress and only gets stuck there. Thus, in this post, you will be guided on how you can resolve such an issue on your Windows 10 computer. So if you are one of the users who experience the same problem, there are several fixes you can check out if your computer is stuck on the signing out screen with a blue spinning circle. You can try to force shutdown your computer or troubleshoot the problem in a Clean Boot State. You could also try to check the status of the User Profile Service or repair User Profile, as well as run System Restore. For more details, refer to each one of the suggestions provided below. But before you troubleshoot the problem, make sure that you are logged in to your computer as an administrator.

Option 1 – Try to force shutdown your computer

The first thing you can do is to force reboot your computer as this simple fix could help in fixing the problem. This option is quite simple, just make sure that before you do it, you have to save all your work.

• First, turn on your computer and press and hold the power button for at least 30 seconds. You might notice the screen flashing or making any changes, just ignore it.
• After that, plug out and plug in your computer and automatically turn it on.
• Once done, check if the issue is now fixed or not.

Option 2 – Put your computer in a Clean Boot State

It is possible that some third-party application is causing your computer to get stuck in the signing out screen. So you can try putting your computer in a Clean Boot State and see if it fixes the problem.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” checkbox and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” checkbox.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• Once your computer is in a Clean Boot State, you should now be able to sign out or sign in without any problem.

Option 3 – Try checking the status of the User Profile Service

If forcing your computer to shut down or putting your computer in a Clean Boot State didn’t fix the problem, you can try to check the status of the User Profile Service since it is the one responsible for loading and unloading user profiles. Thus, if this service is disabled or stopped, you will no longer be able to sign out or sign in successfully.

• Tap the Win + R keys to launch the Run utility and type “services.msc” in the field and hit Enter to open the Services Manager.
• From there, look for the User Profile Service and make sure that its Startup Type is set to Automatic and that its status is “Started”.
• Once done, exit the Services Manager and see if the issue is resolved.

Option 4 – Try to repair your corrupted profile via Registry

In this second option, you can try to repair the corrupted profile using the Registry but before you proceed, make sure to create a System Restore Point and then follow the steps below.

• Tap the Win + R keys to open the Run dialog box.
• Then type “regedit” in the field and hit Enter or click OK to open the Registry Editor.
• Next, go to this registry key: ComputerHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionProfileList
• Once you’ve opened the registry key, you should see a list of all the user profiles on your computer. Now click on each S-1-5 folder and look for the “ProfileImagePath” entry and double click on it to check which user account it is related to. You will see a path like “CUsersACK” where “ACK” is the username.
• You should know which of the user account is corrupted. Just look for a key named “RefCount” and change its Value data to “0” and click OK. And if it isn’t available, simply right-click on the right pane and create it.
• After that, double click on the key named “State” and make sure that the Value data is “0” and click OK.
• Exit the Registry Editor and restart your computer to apply the changes made and then check if it fixed the problem or not.

Option 5 – Run System Restore

• 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 you are trying to install a Feature Update in Windows 10 but you got the error code 0x80190001, then it means that there is something wrong with the installation files. The installation files are either corrupted or some of them failed to be downloaded. On the other hand, the issue might also have something to do with a driver issue. When you encounter error 0x80190001, you will see the either of following error message on your screen:

“Something went wrong Couldn’t download Windows 10, please check your network settings and try again. You can contact Microsoft support for help with this error. Here’s the error code 0x80190001”. Or: “An unexpected error was encountered while attempting to download files required for the upgrade”.

Here are some fixes that could help you resolve the error 0x80190001. Follow them carefully.

Option 1 – Run the Network Troubleshooter

As mentioned in the error message the issue might have something to do with the network settings of your computer so you can try to run the Network Troubleshooter and then try updating or installing Windows 10 again.

Option 2 – Update Network drivers

• 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, look for Network Adapters from the list of device drivers displayed. Once you find it, expand it to see the Network drivers.
• Right-click on it and select the option “Uninstall device” – do the same thing for the other Network drivers.
• Restart your PC so Windows can detect and reinstall the drivers you just uninstalled.

Option 3 – Use Storage Sense to clean up temporary and junk files

• Open Setting > System > Storage from the WinX Menu.
• From there, you will see a list of all the local and connected storage devices along with the details on the free space.
• Now make sure that the Storage Sense feature is turned On then go find a link that says “Free Up Space” and click it to open.
• After that, a screen which is the built-in program in Windows 10 will appear and will scan your computer for the following junk files so you can free up disk space:
• Windows Upgrade Log Files
• The system created Windows Error Reporting Files
• Thumbnails
• Temporary Internet Files
• Previous Windows Installation Files
• Delivery Optimisation Files
• DirectX Shader Cache

Note: Once you’re done freeing up space on your drive, try to run the setup file again.

Option 4 – Delete 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. A lot of users tried deleting the files in this folder to fix the problem and so far it has worked. Like them, you can try clearing the Windows Update cache by simply deleting the contents of the folder named “SoftwareDistribution” since Windows apparently can’t clear and re-download the update contents once they are corrupted. Thus, deleting the contents of this folder will make Windows download the contents again which will fix the problem. To do that, follow the steps below.

• 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

• After entering these commands, it will stop the Windows Update Service and the Background Intelligent Transfer Service.
• 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.
• 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 5 – Run the Windows Update Troubleshooter

You might also want to run the Windows Update Troubleshooter as it is also known to help users resolve Windows Update errors like error 0x80190001.

Option 6 – Try to disable your antivirus program

Disabling the antivirus program or any security software installed in your computer is always a good idea you can try when the Windows Update process does not go smoothly. So before you try updating your computer again, make sure to disable the antivirus or security program and once the Windows Update is done, don’t forget to enable the antivirus program back again.

Option 7 – Try to use the Media Creation tool

The Media Creation tool in Windows allows you to use the ISO installation file to make a bootable device that you can use to install Windows on your PC. Note that this is kind of different from the usual installation process as it could erase your computer’s current settings and data on the primary drive. Thus, before you proceed, you need to backup all your data into some removable drive and then use the Media Creation Tool to make a bootable drive.

• After making the bootable drive, you need to plug it into your computer and then reboot.
• Next, tap the F10 or Esc key to open the boot options.
• Now set the boot priority of the removable drive the highest. Once the setup comes forth, follow the next onscreen instructions and install Windows without any problems.

You can prevent starting of app installations files if they have not come from the MS store inside Windows 11. This can make your PC more secure because all apps in the store will have to be digitally signed and overall it can provide you with more control over what will be installed. Follow the guide below to find out how can you easily turn this feature ON.

1. Press ⊞ WINDOWS + I to open Windows settings
2. Select Apps and then choose Apps & Features
3. Click on Choose where to get apps to bring a drop-down menu
4. Select The Microsoft Store only (Recommended)
5. Close settings

Settings will apply changes immediately and you continue using Windows right away. With these settings turned ON if you want to install a downloaded application or run the installer you will not be able to, and message The app you’re trying to install isn’t a Microsoft-verified app will show on your screen. You can always reverse this setting by choosing Anywhere in settings instead of Microsoft store only.

Caching is used to enhance the performance of applications in Windows and other operating systems. It helps applications to load faster but there are times when the cache can get damaged or corrupted and as a result, you might encounter some issues. One of them is in the Firefox browser where the “Your Firefox profile cannot be loaded, It may be missing or inaccessible” error message may appear. You could also encounter this kind of error when Firefox is unable to access or find the profile folder. In case you don’t know what the profile folder is, it is where Firefox stores your user data and settings by default. Firefox pulls information from this folder each time you choose to open it. You can find this default Firefox profile folder under the %APPDATA%MozillaFirefoxProfiles folder. If you experience issues when trying to access the Profile Manager, you have the option to create a new default Firefox profile folder. This will fix the “Your Firefox profile cannot be loaded, It may be missing or inaccessible” error. How? Simply follow the given steps below. Step 1: Tap the Win key or click the Windows Start button to open the Start menu. Step 2: Next, type “%appdata%” in the field and hit Enter to open the hidden AppDataRoaming folder. Step 3: Now double click the Mozilla folder as well as the Firefox folder. Step 4: From there, look for the “profiles.ini” file and delete it. Make sure that you don’t delete the Profiles folder which should have the icon of a file folder. Note: Keep in mind that the .ini file extension is identified as the file that features a gear icon beside the “Configuration settings” or “Application settings”. Step 5: Once you open Firefox, a new profile will be created. On the other hand, if you know where your profile exists, you can try the following steps below to help Firefox locate it.

• First, you need to move the profile folder back to its original location.
• Next, restore the profile folder’s original name if you have modified it.
• Then create a new profile using the Profile Manager and give it an appropriate name.
• Now click on the Choose Folder button and select the profile folder you have moved or renamed before you exit the Create a new profile wizard.

The win32kfull.sys file is one of the kernel-mode device drivers in your Windows 10 operating system. In case you don’t know, there are two kinds of device drivers – the first ones are the normal drivers that communicate between your hardware and the operating system while the second ones are the kernel-mode drivers. The latter is necessary for booting your OS. And there are times when you encounter the win32kfull.sys error while booting your PC. Here’s the full context of the win32kfull.sys error:

“SYSTEM_SERVICE_EXCEPTION (win32kbase.sys) APC_INDEX_MIXMATCH PAGE_FAULT_IN_NONPAGED_AREA”

This error could be caused by corrupted or outdated drivers with incomplete files or it could be caused by some driver or software installed on your computer. To fix this error, here are some troubleshooting options you need to check out.

Option 1 – Try updating all the Drivers

As pointed out, the win32kfull.sys error can be due to outdated or corrupted drivers that are not compatible with your hardware. These drivers include but are not limited to display, network, sound, hard drive, and more. If you are not able to access the internet, you can just manually download the update using another PC. To update your drivers, here’s what you need to do:

• Tap the Win + R keys to launch Run.
• Type in devmgmt.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. If you see a red or yellow sign that shows up against the driver, right-click on the driver’s name and select “Update Driver Software” or “Uninstall”. And if you find any “Unknown device”, you need to update it as well.
• Select the “Search automatically for updated driver software” option and then follow the instructions to complete the process.
• Restart your PC.

Note: You also have the option to go directly to the website of your graphics card manufacturer and check if there’s a new update – if there is, download it. After that, you could also check if there’s a new update of the game you’re getting the issue of the black bar.

Option 2 – Identify and uninstall problematic programs by putting your PC in a Clean Boot State

One of the main causes of BSOD errors like win32kfull.sys is a problematic program that could clash with your existing operating system as well as computer architecture. There are tons of programs that are either incompatible or conflict with the existing drivers or software in your system. To identify such programs, you need to put your PC in a Clean Boot state. How? Follow these steps:

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

After putting your PC in a Clean Boot State, try creating a system restore point and see if the problem still occurs. Clean Boot troubleshooting is designed to help you isolate the problem. For you to execute a clean boot troubleshooting, you must do a couple of actions (the steps are given above) and then restart your PC after every action. You might have to disable one third-party app after the other to really isolate the issue. And once you’ve narrowed down the problem, you can either disable the third-party app that’s causing the problem or remove it. Note that you must switch your PC back into the Normal Startup mode after you’re done troubleshooting the problem. Here’s how you can do it:

• From the “Start” menu, go to System Configuration.
• After that, switch to the General tab and click the option for “Normal Startup”.
• Next, go to the Services tab and clear the checkbox for “Hide all Microsoft services”.
• Then find and click “Enable all” and if prompted, you have to confirm.
• Afterward, go to the Task Manager and enable all the Startup programs and confirm the action.
• Restart your PC when prompted.

Once you have identified the program causing the problem, uninstall it right away from your Control Panel.

Option 3 – Perform an SFC scan

The SFC or System File Checker scan could detect and automatically repair damaged system files that could be causing the win32kfull.sys error. 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

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.