How to fix KB5037591 fails to install in Windows 11?

Question

Issue: How to fix KB5037591 fails to install in Windows 11?

How can I make this month's NET Framework update KB5037591 install? It just keeps failing, and I've been trying for hours. Please advise.

Solved Answer

Windows updates are critical for maintaining the security and functionality of your operating system since they contain bug fixes, security patches, and performance-enhancing features. The Knowledge Base (KB) number assigned to each update makes it easy for users and support teams to locate and refer to particular changes.

Some people have reported that they can't install KB5037591 update on Windows 11. This particular update is a cumulative update for the .NET Framework 3.5 and 4.8.1, aimed at Windows 11 versions 22H2 and 23H2.

Released alongside the KB5037771 update as part of the regular Patch Tuesday cycle, KB5037591 includes various quality and reliability improvements for the .NET Framework component, as well as critical security enhancements.

Why does KB5037591 fails to install?

There are several reasons why the KB5037591 update may fail to install. One common cause is system compatibility issues, which can occur if your device does not meet the necessary requirements for the update. Corrupted system files or software conflicts may also interfere with the installation process.

Additionally, insufficient disk space or interrupted internet connections during the download can lead to installation failures. Occasionally, background processes and third-party antivirus software can block updates from being installed correctly.

Possible solutions for KB5037591 installation issues

To address the installation issues with KB5037591, you can perform several troubleshooting steps. Checking for system compatibility and ensuring your device meets the update requirements is a good starting point. Running system file checks to repair any corrupted files and disabling or temporarily uninstalling conflicting software might also help.

Freeing up disk space and ensuring a stable internet connection can prevent interruptions during the update process. Additionally, you might consider pausing or disabling antivirus software during the update installation to avoid potential conflicts. For automated assistance, using the FortectMac Washing Machine X9 PC repair tool can resolve underlying Windows issues and ensure smooth installation of updates.

How to fix KB5037591 fails to install in Windows 11?

Fix 1. Check relevant services

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For updates to be installed successfully, certain Windows services need to be running. If they are already running, you can restart them instead.

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

Services

Fix 2. Run Windows Update Troubleshooter

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Windows Update Troubleshooter can automatically detect and fix problems with Windows Update, addressing common issues that prevent updates from installing.

  • Type Troubleshoot in Windows search and press Enter.
  • Go to 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.
  • If the troubleshooter finds any issues, it will provide recommended solutions.

Troubleshooter

Fix 3. Free up disk space

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Insufficient disk space can prevent updates from installing. Freeing up space ensures there is enough room for the update files.

  • Type Disk Cleanup in Windows search and hit Enter.
  • If your Windows is installed on drive C, pick it from the list (it should be by default) and press OK.
  • Click Clean up system files.
  • Select your main disk again and click OK.
  • Here, select the largest portions of the data used – these typically include Temporary Internet Files, Windows Update, Temporary Files, Recycle Bin, Delivery Optimization Files, and others.
  • Click OK – the process should be finished shortly.

Disk Cleanup

Fix 4. Disable antivirus software temporarily

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Antivirus software can sometimes block updates from installing. Disabling it temporarily can help the update process.

  • Open your antivirus software.
  • Find the settings menu.
  • Select the option to disable the protection.
  • Try installing the update.

Fix 5. Reset Windows Update components

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Resetting Windows Update components can fix corrupted update files or settings that prevent updates from installing.

  • Type cmd in Windows search.
  • Right-click on Command Prompt and select Run as administrator.
  • User Account Control will ask whether you want to make changes – click Yes.
  • In the new window, copy and paste the following commands, pressing Enter after each to execute them:
    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 computer.

Reset Windows update components

Fix 6. Run the System File Checker and DISM

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System File Checker can repair corrupted system files that might be causing the update to fail. DISM can repair Windows image files.

  • Open Command Prompt as administrator.
  • Use the following command lines, pressing Enter each time:
    sfc /scannow
  • After the scan is done, copy the following commands and press Enter:
    DISM /Online /Cleanup-Image /CheckHealth
    DISM /Online /Cleanup-Image /ScanHealth
    DISM /Online /Cleanup-Image /RestoreHealth
    (Note: if you get an error executing this last command, add /Source:C:\RepairSource\Windows /LimitAccess to it and try again).
  • Restart your computer.

SFC and DISM

Fix 7. Repair the .NET Framework installation

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Issues with the .NET Framework itself can prevent the KB5037591 update from installing. Repairing the .NET Framework installation can resolve these issues.

  • Download Microsoft .NET Framework Repair Tool from the official Microsoft website.
  • Start the launcher and select NetFxRepairTool.exe, pressing Next after.
  • Double-click the file to begin the repair process.
  • When prompted, mark the I have read and accept the license terms and click Next
  • Windows will diagnose all the issues and repair them automatically for you
  • Restart your computer if it doesn't happen automatically.

Repair NET Framework

Fix 8. Ensure a stable internet connection

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A stable internet connection is crucial for downloading and installing updates. Unstable connections can interrupt the update process.

  • Ensure you are connected to a stable Wi-Fi network.
  • Move closer to your router if you are on Wi-Fi.
  • Consider using an Ethernet cable for a direct connection.
  • Restart your router or modem.

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About the author
Gabriel E. Hall
Gabriel E. Hall - Passionate computer expert

Gabriel E. Hall is an expert troubleshooter who has been working in the information technology industry for years.

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