Windows Update error 0x8024200B generally occurs when update files

Windows Update error 0x8024200B generally occurs when update files are downloaded but fail verification or processing—often because they're corrupted, blocked by security software, or interrupted by network issues

Disable antivirus, firewall, VPN, or proxy temporarily
Run Windows Update Troubleshooter via Settings → Update & Security → Troubleshoot
Open Command Prompt as admin and run:
DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow
Stop services and clear update cache:

net stop wuauserv  

net stop bits  

ren C:WindowsSoftwareDistribution SoftwareDistribution.old  

ren C:WindowsSystem32catroot2 catroot2.old  

net start wuauserv  

net start bits

Restart your PC and retry Windows Update
If it still fails, create a new local administrator account and run the update from that profile

For full step‑by‑step instructions and additional solutions, see this Windows Update error 0x8024200B fix guide