Situatie
Error 0x800B0101 in Windows 11 usually means a certificate validation problem—most commonly your system date/time is wrong or a Windows update/app is using an expired or not-yet-valid certificate.
Solutie
1. Fix date & time
This alone fixes a huge percentage of cases.
- Go to Settings → Time & Language → Date & Time
- Turn ON:
- Set time automatically
- Set time zone automatically
- Click Sync now
If your clock is off, certificates appear “invalid,” triggering this error.
2. Restart Windows Update services
If the error appears during updates:
- Open Command Prompt (Admin)
- Run:
net stop cryptSvc
net stop bits
net stop msiserver
Then:
net start cryptSvc
net start bits
net start msiserver
3. Clear Windows Update cache
Still in Command Prompt:
ren C:\Windows\System32\catroot2 catroot2.old
Then restart your PC.
4. Update root certificates
Sometimes your system lacks updated certificates.
- Run Windows Update fully
- Or manually install updates from Microsoft
6. Check antivirus or firewall
Some antivirus tools interfere with certificates.
- Temporarily disable antivirus
- Or uninstall it if the issue started after installing one
7. Reinstall the failing app/update
If this error appears when:
- Installing a program → re-download it
- Running a specific app → reinstall it
The installer itself might have an expired certificate.
Common scenarios
- Windows Update fails → usually cache or certificates
- Installing software fails → expired installer
- Microsoft Store issues → time/certificate sync problem
If nothing works
- Try System Restore
- Or create a new Windows user profile (sometimes profiles get corrupted).
Leave A Comment?