How to fix error code 0x80240034: Update download failed in Windows 11

Here are several methods to fix error code 0x80240034: Update download failed in Windows 11:

1. Restart your PC: A simple restart can often resolve the issue. Restart your PC and try updating again.
2. Check your internet connection: Ensure your internet connection is stable and strong enough to download the update. You may need to reset your router or modem to resolve connectivity issues.
3. Disable antivirus software: Your antivirus software might be blocking the update download. Temporarily disable your antivirus software and try updating again.
4. Clear the Windows Update cache: Clearing the cache can help resolve the problem. 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. Use the Windows Update Troubleshooter: Windows 11 includes a built-in troubleshooter to help fix update issues. Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters > Windows Update > Run the troubleshooter.
6. Manually download and install the update: If other methods fail, manually download and install the update from the Microsoft website. Visit the Microsoft Update Catalog, search for the required update, download it, and then double-click the downloaded file to install.