Microsoft recently released the Update KB5012643 for Windows 11 users to get quality improvements and advanced security on their system. The latest update fixes issues with BitLocker, memory leaks, and network issues. But few users point out that the same update is difficult to install on their system, and they are confused about how to handle it.

This latest update improves the quality of the servicing stack, so it is important for many users to have it installed on their Windows 11. If you are struggling to install the Update KB5012643 on your system, you can walk through this article to get all the possible solutions to install the same update easily. Let’s have a look.

Fix 1: Run Update Troubleshooter

The excellent solution to install the Update KB5012643 on your system without any hurdle is running the update troubleshooter. To do so, 

  • Firstly, open the Start menu, and from the list of apps, choose Settings.
  • In the new screen, click on the System and select the Troubleshooter option.
  • Then choose the Other troubleshooters option, and beside the Windows Update option, click on the Run button.
  • Finally, restart the system, and you can reinstall the recent update on your system.

Fix 2: Install Windows 11 Installation Assistant

In most cases, simply installing the Installation Assistant might allow you to install the Update KB5012643 on your Windows 11 quickly. To do so, 

  • Firstly, go to the Windows 11 Installation Assistant page using your web browser.Windows 11 Installation Assistant
  • In the new screen, under the Windows 11 Installation Assistant section, click on the Download now button.
  • Once the tool is installed on your system, restart the system and reinstall the recent update.

Fix 3: Reinstall Windows 11 Media Creation Tool

If the above solution does not help you, you can download and install the Media Creation Tool to install the Update KB5012643 smoothly. To do so, 

  • Firstly, go to the Windows 11 Media Creation Tool page using your web browser.Windows 11 Media Creation Tool
  • In the new screen, under the Create Windows 11 Installation Media section, click on the Download now button.
  • Once the tool is installed on your system, restart the system and reinstall the recent update.

Fix 4: Run SFC Scan

If any system files get corrupted, it will interrupt your update process and make it difficult to install the Update KB5012643 on your system. Here you need to run the SFC tool to repair the corrupted system files. To do so, 

  • Firstly, type “cmd” in the search box and open the Command Prompt from the result with admin access.
  • In the new screen, type the following command and press Enter

Sfc /scannow

  • Once done, again type the following commands to restore the damaged files, 

DISM /Online /Cleanup-Image /CheckHealth

DISM /Online /Cleanup-Image /ScanHealth

DISM /Online /Cleanup-Image /RestoreHealth

  • All the above commands are executed, restart the system and install the recent update.

Fix 5: Reset Windows Update Service

Another solution to install the Update KB5012643 on your Windows 11 is resetting the Windows update services. To do so, 

  • Firstly, type “services” on your search box and open the Services option from the search result. 
  • Inside the new screen, select the Windows Update service from the list, right-click on it and select the Properties from the sub-menu.Services
  • In the Properties screen, change the Startup type to Automatic and Service status to Running.
  • Once done, on the Restart the service option from the top left corner of the screen. (You can reset the Background Intelligent Transfer service as well).
  • Finally, reinstall the recent update and see the result.

Fix 6: Reset Windows Update Components

If none of the above solutions does help you, then you need to reset Windows Update components to install the Update KB5012643 without any trouble. To do so, 

  • Firstly, type “cmd” in the search box and open the Command Prompt from the result with admin access.
  • In the new screen, type the following commands and press Enter

SC config trustedinstaller start=auto

 net stop bits

 net stop wuauserv

 net stop msiserver

 net stop cryptsvc

 net stop appidsvc

 Ren %Systemroot%\SoftwareDistribution SoftwareDistribution.old

 Ren %Systemroot%\System32\catroot2 catroot2.old

 regsvr32.exe /s atl.dll

 regsvr32.exe /s urlmon.dl

l regsvr32.exe /s mshtml.dll

 netsh winsock reset

 netsh winsock reset proxy

 rundll32.exe pnpclean.dll,RunDLL_PnpClean /DRIVERS /MAXCLEAN

 dism /Online /Cleanup-image /ScanHealth

 dism /Online /Cleanup-image /CheckHealth

 dism /Online /Cleanup-image /RestoreHealth

 dism /Online /Cleanup-image /StartComponentCleanup

 Sfc /ScanNow 

net start bits

 net start wuauserv

 net start msiserver

 net start cryptsvc

 net start appidsvc

  • Once all the above commands executed, restart the system and reinstall the recent update.

These are all about the Update KB5012643 not installing on Windows 11 issue and its fixes. If you have any queries or concerns regarding this article, you can leave a comment in the comment box below.