How to Repair Windows 10 Upgrade Error 0x800F0923

“An error occurred when unpacking, Unarc.dll returned error code -1, ERROR: archive data corrupted (decompression fails).”

What is Unarc.dll file?

Option 1 – Try to reinstall the game

Option 2 – Try to re-register the .dll file using the Regsvr32 tool

• The first thing you have to do is to locate the DLL file named dll on your computer and rename it to Unarc-bak.dll.
• Next, copy the Unarc.dll file from another well-functioning computer and save it on your desktop.
• After that, move the DLL file you just copied to the System32 folder if you are using a 32-bit operating system, or the SysWOW64 folder if you are using a 64-bit operating system.
• Now you have to register the new DLL file and you can do that using Windows PowerShell.
• Open Windows PowerShell and then execute this command if you have placed the DLL file in the System32 folder: regsvr32 %systemroot%System32unarc.dll
• On the other hand, if you have placed the DLL file in the SysWOW64 folder, then execute this command: regsvr32 %systemroot%SysWOW64unarc.dll
• Once you’re done, a message will be displayed saying that the DLL file was registered.
• Restart your computer and check if the problem is now fixed.

Option 3 – Troubleshoot the isDone.dll error in a Clean Boot State

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

Option 4 – Try updating or reinstalling your Graphics drivers

• First, boot your computer into Safe Mode.
• After that, 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. 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 5 – Try scanning your computer using 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.

Steam Deck operating system and software

Cost and release date

Conclusion

Changes and features

Fixes

Taskbar:

• We fixed an issue where if you drag app icons on the Taskbar to rearrange them, it was making the apps launch or minimize when you released the icon.
• Using a long press with a touch on an app icon in the Taskbar to open the jump list should now work.
• After right-clicking the Start icon in the Taskbar, clicking somewhere else should now dismiss the menu more reliably.
• Shift + Right-click on an app icon in the Taskbar will now bring up the window menu like it used to and not the jump list.
• We’ve addressed an issue that was making your mouse move slowly when hovering over the Taskbar previews.
• We’ve included the fix for an issue when using multiple Desktops where an app icon in the taskbar might give the appearance of multiple windows being open when that wasn’t the case on that Desktop.
• When using the Amharic IME you should no longer see an unexpected X next to the IME icon in the taskbar.
• The issue where if you click on the input indicator on the Taskbar and it would unexpectedly highlight Quick Settings has been fixed.
• When you hover over Task View, the preview flyout for your Desktops will no longer pop back up after using Esc to dismiss them.
• We made a fix to address an issue where explorer.exe might crash after hovering over the Task View icon in the Taskbar.
• We fixed an issue where the selected date in the calendar flyout was out of sync with the date in the Taskbar.
• We made an update to address a scenario resulting in some Insiders not seeing the lunar calendar text in the calendar flyout when enabled in Settings.
• This flight addressed an issue that could unexpectedly make the Taskbar background transparent.
• Right-clicking the focus assist icon in the taskbar should now show a context menu.
• The issue from the previous flight where icons in the taskbar corner were getting crushed against the top of the Taskbar has been addressed.
• The tooltip for the location in use icon in the Taskbar should no longer appear blank sometimes.

Settings:

• We fixed an issue making Settings crash on launch periodically.
• Using the volume mixer sliders in Sound Settings should be more responsive now, as well as the page responsiveness as a whole.
• We fixed an issue resulting in Disk and Volumes Settings’ change size option being clipped.
• There was a non-functional verify link under Backup Settings – this has been fixed.
• The Power and Battery Settings page should no longer be reporting that the battery saver is engaged if it’s not.
• The Power and Battery Settings page should also now not crash when launched from Quick Settings.
• We fixed a grammatical error in the Sign-in Settings text.
• The “I forgot my PIN” link was unexpectedly missing in Sign-in Settings when a PIN was set up and has now been returned.
• The issue where the Move option under Apps & Features in Settings wasn’t working reliably should be addressed in this build.
• We’ve mitigated a problem where some of the colors in Settings weren’t updating after switching between dark and light mode, leaving the unreadable text.
• We’ve done some work to help improve the performance of Settings when switching between light and dark mode.
• We addressed an issue where some of the elements of the Themes page in Settings would end up crowded together when the window size was small.
• We resolved an issue where the Pen menu toggle under Taskbar Settings was not in sync with the actual state of the feature.
• Changes made to “Dismiss notification after this amount of time” in Accessibility Settings should now persist.
• Some of the icons you could enable in Taskbar Settings were erroneously labeled Windows Explorer even though that’s not what they were – this should now be fixed.
• The Connect text in Quick Settings has been updated to say Cast.

File Explorer:

• Clicking the command bar button twice should now close any dropdown that appeared.
• The new command bar should now appear when “Open folders in a separate process” is enabled under File Explorer Options > View.
• This build addresses an issue where right-clicking a file and selecting Open With > Choose another app might launch the file in the default app rather than opening the Open With dialog.
• Fixed an issue the desktop and File Explorer context menu would stop launching.

Search:

• We fixed an issue where the option to verify your account in Search wasn’t working.
• Hovering over the Search icon on a secondary monitor will now show the flyout on the correct monitor.
• Search should now work if you open Start and start typing after having gone to the apps list and back.

Widgets:

• When using the Outlook client with a Microsoft account, Calendar, and To-Do updates should sync faster down to the widgets.
• We addressed an issue where if you added multiple widgets quickly from the widget's settings, it could result in some of the widgets not being visible on the board.
• We fixed a bug where widgets could all become stuck in a loading state (blank squares in the window).
• The traffic widget should now follow the Windows mode (light or dark).
• The title of the sports widget should no longer mismatch with the content of the widget.

Other:

• This build addresses an issue where ALT + Tab was getting stuck open sometimes after you released the keys and had to be manually dismissed.
• We made a fix for an issue where Narrator's focus wasn’t ending up on the emoji panel after using the keyboard shortcut to open it.
• Magnifier’s lens view has been updated so the lens now has rounded corners.
• We found an issue that was noticeably impacting Start launch reliability for some Insiders, and have addressed it with this flight.
• We’ve updated the “Most Used” text in the Start menu’s app list so it should no longer be getting clipped.
• Using the semantic zoom in Start’s app list should no longer result in the list being pushed down and to the right off the edge of the window.
• We fixed an issue where if you pressed ⊞ WIN + Z you would need to press Tab before you could use the arrow key to navigate through the snap layouts.
• We addressed an issue where an acrylic area could get left on the screen after repeatedly snapping and unsnapping a window with touch.
• We’ve done some work to mitigate an unexpected flash when moving a snapped window with touch.
• We made a change to help window borders have a little more contrast when “Show accent color on title bars and windows borders” was turned off.

Known issues in Windows 11 repaired

Start:

• In some cases, you might be unable to enter text when using Search from Start or the Taskbar. If you experience the issue, press ⊞ WIN + R on the keyboard to launch the Run dialog box, then close it.
• Based on feedback, we are working on adding access keys to ⊞ WIN + X so that you can do things like “⊞ WIN + X M” to launch Device Manager. Insiders may see this functionality in this build, however, we are currently investigating an issue in which sometimes the option is unexpectedly unavailable.

Taskbar:

• There is an issue in this build where Explorer.exe will crash when the date and time button on the Taskbar is clicked to access new notifications with Focus Assist turned off. The workaround for this is to enable Focus assist to priority or alarms mode. Note that when focus assist is turned on, notification popups won’t appear, but they will be in the notification center when opened.
• The Taskbar will sometimes flicker when switching input methods.
• Taskbar previews may draw partially offscreen.

Settings:

• When launching the Settings app, a brief green flash may appear.
• When using Quick Settings to modify Accessibility settings, the settings UI may not save the selected state.
• The button to rename your PC doesn’t work in this build. If needed, this can be done using sysdm.cpl.
• Settings will crash when clicking “Facial recognition (Windows Hello)” under Sign-in Settings if Windows Hello is already set up.
• Reset this PC and Go back buttons in Settings > System > Recovery does not function. Reset and rollback can be accessed from the Windows Recovery Environment by selecting System > Recovery > Advanced startup, and pressing Restart now. Once in Windows Recovery, choose Troubleshoot.
• Choose Reset this PC to perform a reset.
• Choose Advanced options > Uninstall Updates > Uninstall latest feature update to perform a rollback.

File Explorer:

• exe crashes in a loop for Insiders using the Turkish display language when the battery charge is at 100%.
• When right-clicking the desktop or File Explorer, the resulting context menu and submenus may appear partially off-screen.
• Clicking a desktop icon or context menu entry may result in the wrong item being selected.

Search:

• After clicking the Search icon on the Taskbar, the Search panel may not open. If this occurs, restart the “Windows Explorer” process, and open the search panel again.
• When you hover your mouse over the Search icon on the Taskbar, recent searches may not be displayed. To work around the issue, restart your PC.
• The search panel might appear black and not display any content below the search box.

Widgets:

• Widgets board may appear empty. To work around the issue, you can sign out and then sign back in again.
• Launching links from the widgets board may not invoke apps to the foreground.
• Widgets may be displayed in the wrong size on external monitors. If you encounter this, you can launch the widgets via touch or WIN + W shortcut on your actual PC display first and then launch on your secondary monitors.

Store:

• The install button might not be functional yet in some limited scenarios.
• Rating and reviews are not available for some apps.

Windows Security:

• Device Security is unexpectedly saying “Standard hardware security not supported” for Insiders with supported hardware.
• “Automatic sample submission” is unexpectedly turned off when you restart your PC.

Localization:

• There is an issue where some Insiders may be missing some translations from their user experience for a small subset of languages running the latest Insider Preview builds. To confirm if you have been impacted, please visit this Answers forum post and follow the steps for remediation.

• Your PC’s motherboard should support both Legacy and UEFI.
• Your PC should be running at least the 1703 Windows 10 version or newer on an MBR partition.

Option 1 – Convert MBR to GPT via Windows built-in utilities

• In the Windows Search box, type “command prompt” and from the search results that appear, right-click on Command Prompt and select the “Run as administrator” option.
• After that, execute this command: exe /convert /allowfullOS
• Now, wait until the process is completed since you can track its process on your screen.
• Once it’s done, go to Settings > Update & Security > Advanced Startup options and from there, click on Restart Now. This will restart your computer and give you advanced options.
• Next, select Troubleshoot > Advanced Options where you will see further options including System Restore, Startup Repair, Go back to the previous version, Command Prompt, System Image Recovery, and UEFI Firmware Settings.
• Now select the UEFI Firmware Settings. This will take you to the BIOS. Boot Mode is typically available under Boot > Boot Configuration. Once you’re there, set it to UEFI and then save the changes you’ve made. After that, your computer will restart.

Option 2 – Convert MBR to GPT via the Recovery Environment

• When the message appears on your screen while running Windows Setup, you need to tap the Shift + F10 keys to open Command Prompt.
• Make sure to run Command Prompt as admin and then execute this command: exe /convert
• After that, wait until the process is completed. When it’s done, you have to go to the BIOS just like in the first given option above.
• As mentioned, you can usually find the Boot Mode under Boot > Boot Configuration. Once you’re there, set it to UEFI.
• Now save the changes made and exit as your computer will restart.

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Error Code 0x80070020 – What is it?

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

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

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

Solution

Error Causes

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

Further Information and Manual Repair

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

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

Method One: Restart Your Device

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

Method Two: Disable Antivirus Temporarily

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

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

Method Three: Run the Update Troubleshooter for Windows

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

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

Method Four: Execute A Clean Boot

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

Method Five: Reset Windows Update Components

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

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

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

Method Six: Disable Third-Party Antivirus

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

Method Seven: Use the DISM Tool for Windows 10

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

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

/CheckHealth – to check for corrupted files or components

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

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

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

Cleaning corrupted files using DISM utility:

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

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

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

Packages only when you need them

• "bundle-list" for showing what's installed
• "bundle-info" for details on installed bundles (such as owned files via the "‑‑files" flag)
• "search" for repository searching
• "bundle-add" for installation
• "bundle-remove" for uninstallation

Clear Linux* modular philosophy

Clear Linux* performance

Conclusion

MyFunCards Toolbar is a browser hijacking extension for Google Chrome made by Mindspark Interactive. This extension installs a toolbar for your browser, changes your default search engine, and lowers the general performance of your browser. This extension has access to your personal information, injects your search results with potentially dangerous ads, and possibly breaks some of the browser functions. Since this extension injects its code into too many files and has access to all your browser details, upon removing it you will lose all your browser settings, themes, and login information. MyFunCards is considered a potentially unwanted application, and as a result, is flagged for optional removal by many anti-malware programs.

About Browser Hijackers

Key symptoms that an internet browser has been hijacked

How browser hijacker finds its way onto your computer system

Browser hijacker removal methods

Malware Blocking Internet And All Antivirus Software? Do This!

Install the anti-virus in Safe Mode

Use an alternate web browser to download security application

Make a bootable USB antivirus drive

SafeBytes Anti-Malware: Lightweight Malware Protection for Windows Computer

Technical Details and Manual Removal (Advanced Users)

The following files, folders, and registry entries are created or modified by MyFunCardsToolbar

Option 1 – Try to toggle the settings of the Internet Options

• In the Windows Search box, search for Internet Options to open it.
• Next, go to the Security tab and drag the security slider to the lowest possible security for all the given zones.
• After that, click on OK to save the changes made and close the Internet Options.

Option 2 – Try to update or reinstall the respective 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.

Option 3 – Try to change the PIN of the security key

Option 4 – Temporarily disable Firewall and third-party antivirus

Option 5 – Try to troubleshoot the web browser

Option 1 – Try to run the Cleanup (Decline) Superseded updates PowerShell script

Option 2 – Try to rename the Spupdsvc.exe file

• First, tap the Win + R keys to launch the Run utility.
• Next, type the following command and hit Enter to execute it in cmd:

 /c ren %systemroot%System32Spupdsvc.exe Spupdsvc.old

• The command you entered will rename the troublesome “Spupdsvc(.)exe” file to “Spupdsvc(.)old”.
• Now restart your computer after the command has been executed.

Option 3 – Try to restart various Windows Update-related services and components

• Tap the Win + X key combination and select Command Prompt (Admin) to open Command Prompt with admin privileges.
• After opening Command Prompt, copy and paste each one of the commands listed below one by one and tap Enter right after you enter each command.
  • net stop wuauserv
  • net stop bits
  • net stop appidsvc
  • ren %systemroot%SoftwareDistribution SoftwareDistribution.bak
  • ren %systemroot%system32catroot2 catroot2.bak
• Once you’ve entered all the commands given above, they will stop all the Windows Update services that are running on your computer as well as clear the SoftwareDistribution folder, and reset the Catroot2 folder. Now you have to start all these Windows Update services you’ve just stopped by executing the following commands:
  • net start wuauserv
  • net start bits
  • net start appidsvc
  • net start cryptsvc
• After that, restart your computer and try to run the setup again, and see if the error is now fixed.

Option 4 – Try to run the Windows Update Troubleshooter

• Go to Settings and then click on Windows Update from the given menu.
• Next, click on the Troubleshoot option and select Windows Update from the given options to run the Windows Update troubleshooter.
• After that, follow the next on-screen instructions and wait until the process is completed, and check if the Windows Update Error 0x8024000B is fixed or not.