How to fix error code 0x80240031: Windows Update issue in Windows 8.1

Here are several steps to resolve error code 0x80240031 in Windows 8.1:

1. Restart your computer: Often, a simple restart can resolve the issue.
2. Check your internet connection: Ensure your internet connection is stable and functioning correctly.
3. Run the Windows Update troubleshooter: Use the built-in troubleshooter to identify and fix issues with Windows Update. Navigate to Control Panel > Troubleshooting > System and Security > Fix problems with Windows Update.
4. Clear the Windows Update cache: Corruption in the update cache can cause issues. To clear it, open Command Prompt as an administrator and enter these commands:

            net stop wuauserv
            net stop cryptSvc
            net stop bits
            net stop msiserver
            ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
            ren C:\Windows\System32\catroot2 catroot2.old
            net start wuauserv
            net start cryptSvc
            net start bits
            net start msiserver

5. Disable antivirus software: Antivirus programs can sometimes interfere with Windows Update. Temporarily disable your antivirus to see if it resolves the problem.
6. Manually download and install the update: If the problem persists, manually download and install the update from the Microsoft website.