Solving Windows 8.1 Update Error 0x80240031

Various strategies are available to address the error code 0x80240031 on Windows 8.1:

1. Reboot your system: Often, a reboot can rectify this problem.
2. Verify your internet connectivity: Ensure your internet is stable and functioning correctly.
3. Utilize the Windows Update troubleshooter: Windows provides a troubleshooter designed to detect and resolve Windows Update issues. Access it via Control Panel > Troubleshooting > System and Security > Fix problems with Windows Update.
4. Purge the Windows Update cache: A corrupt cache can disrupt updates. To clean it, launch 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. Deactivate your antivirus: Antivirus programs can occasionally obstruct Windows Update. Deactivating your antivirus may remedy the issue.
6. Manually download and install the update: If other methods fail, consider manually downloading and installing the update from the Microsoft website.