How to Fix Windows Defender Error 0x80070422
When you see error 0x80070422 in Windows Defender, the Security Center service or Windows Update ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Windows Security Version Mismatch Configuration Error
You may see a “version mismatch” or “configuration error” in Windows Security (formerly Windows D...
Fix Windows Defender Invalid Configuration Permission Denied
You see an error like "invalid configuration permission denied" when trying to c...
Fix Windows Terminal Update Failed: Permission Denied
When updating Windows Terminal, you might see an error like Update failed: permission denie...
Fix Windows Security Virus Scan Stuck at 99%
You run a full virus scan in Windows Security, and it gets stuck at 99% for minutes or hours. Thi...
Fix Outlook 502 Bad Gateway Error After Update
After a recent Outlook update, you might see a '502 Bad Gateway' error when trying to send or rec...
Topic paths
Quick titles
How to Resolve Windows Update Connection RefusedHow to Resolve Chrome Profile Dependency ConflictResolve Task Scheduler Credential FailureFree Up Disk Space After Windows UpdatesBitLocker Access Denied: Troubleshooting System VolumeFix NET::ERR_CERT_DATE_INVALID in Chrome ProfileChrome Permission Denied Troubleshooting GuideReduce High CPU Usage in Windows Security Malware Scans