How to fix
KB5037770 fails to install
on Windows

Hi. I have an issue where KB5037770 is not installing on Windows, so I was wondering if you could help me. I am relatively new to Windows operating system so I am not sure what to do. The message simply says to try again later but it still doesn't work days later.

KB5037770 (OS Build 22000.2960) was released on May 14, 2024, as part of the Patch Tuesday update from Microsoft. This update is specifically for Windows 11 versions 21H2. Among its features, KB5037770 enables the transition from the kuna to the euro in Croatia.

Additionally, it resolves an Internet Explorer mode issue where pressing the left arrow key in an empty text box with caret browsing causes a freeze. This update also fixes a known VPN connection failure issue that appeared after the April 9, 2024, update KB5036992.

Besides these major fixes, it includes numerous quality improvements and bug fixes. Despite the anticipation surrounding these improvements, some have encountered issues where KB5037770 fails to install on Windows 11.

There are several reasons why the KB5037770 update might fail to install on your system, and understanding them can help people resolving the issue. Here are some common causes:

• Insufficient Disk space
• Corrupted system files
• Network issues
• Conflicts with third-party software
• System configuration issues
• Hardware incompatibilities

If KB5037770 fails to install, there are a few steps you can take to resolve the issue. Ensuring sufficient disk space and a stable internet connection is crucial. Running system file checks and ensuring all drivers are up to date can help address underlying issues. Temporarily disabling third-party software and using the built-in Windows Update Troubleshooter may also prove effective. Detailed instructions will be provided below.

For a more comprehensive solution, consider using the [d1] PC repair tool, which can automatically fix various Windows issues, including those related to Windows updates.

Fix 1. Check all the relevant services

Ensuring that the necessary Windows Update services are running is crucial for the update process to work properly.

• Type in Services in Windows search and hit Enter.
• Scroll down a bit to find Windows Update.
• If it is already running, right-click and select Restart.
• If the service is not running, double-click it, and pick Automatic under the Startup type drop-down menu.
• Click Start, Apply, and OK.
• Repeat the process with the Background Intelligent Transfer Service (BITS), Cryptographic, and Windows Installer services.

Fix 2. Perform Disk Cleanup

Clearing unnecessary files can free up disk space, allowing the update to download and install without issues.

• Type Disk Cleanup in Windows search and press Enter.
• Select your main drive (C: by default).
• Select appropriate fields (Temporary files, Recycle Bin, etc.) and click OK.
• If you want a more thorough cleanup and require even more space, select Clean system files in the Disk Cleanup window.
• Select your main drive again - Windows will compute how much space can be retrieved.
• The largest data dumps are usually accumulated in Windows Update and Delivery Optimization sections, although Temp files can also take a lot if it hasn't been cleaned.
• Select appropriate fields and click OK - Windows will remove all these files from your device and free up space.

Fix 3. Run troubleshooters

The built-in Windows Update Troubleshooter can identify and fix common issues that prevent updates from installing.

• Type Troubleshoot in Windows search and hit Enter.
• Select Other troubleshooters.
• Find Windows Update from the list and click Run.
• The troubleshooter will automatically scan your system for potential problems and display any issues it finds.
• Repeat the process with Network & Internet troubleshooter.
• If the troubleshooter finds any issues, it will provide recommended solutions.
• Follow the on-screen instructions and restart your computer.

Fix 4. Disable third-party security software

Third-party antivirus programs can sometimes interfere with the update process, so temporarily disabling them can help.

• Right-click the antivirus program icon in the system tray.
• Select Disable, Turn off, or a similar option.
• Choose a time duration.
• Attempt to install the update again.

Fix 5. Reset Windows update components

Resetting the Windows Update components can resolve issues related to corrupted files or settings.

• Type in cmd in Windows search.
• Right-click on Command Prompt and select Run as administrator.
• User Account Control will ask you whether you want to allow to make changes to the system - click Yes.
• Copy and paste each of these commands, pressing Enter each time:
  net stop bits
  net stop wuauserv
  net stop appidsvc
  net stop cryptsvc
  Del “%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\*.*”
  rmdir %systemroot%\SoftwareDistribution /S /Q
  rmdir %systemroot%\system32\catroot2 /S /Q
  regsvr32.exe /s atl.dll
  regsvr32.exe /s urlmon.dll
  regsvr32.exe /s mshtml.dll
  netsh winsock reset
  netsh winsock reset proxy
  net start bits
  net start wuauserv
  net start appidsvc
  net start cryptsvc 
• Restart your device.

Fix 6. Repair corrupted files

Make sure you repair corrupted files in Windows as follows:

• Open Command Prompt as administrator.
• Paste the following command into the new window:
  sfc /scannow
• Press Enter and wait till the scan is executed.
• As soon as the scan finishes, Windows will report whether integrity violations were found and if they could be fixed. Regardless of the outcome, use these commands next, pressing Enter after each:
  DISM /Online /Cleanup-Image /CheckHealth
  DISM /Online /Cleanup-Image /ScanHealth
  DISM /Online /Cleanup-Image /RestoreHealth
• Restart your computer.

Fix 7. Install the update manually

Downloading and installing the update manually can bypass issues related to the automated update process.

• Go to the official Microsoft Update Catalog website.
• Type the KB5037770 into the search bar, and click Search.
• You will find many different versions on the update – you need to find the one that matches your PC specs and Windows version (as a home user, ignore Windows server versions).
• After picking the correct version, click the Download button and proceed with the on-screen instructions.
• Restart your computer to implement the new updates.