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 listFix Windows Update Setup Failed Rollback Changes
When a Windows update fails and you see "Undoing changes" or "We couldn't complete the updates, u...
Fix Windows Defender Permission Denied Error on Mac
If you're running Windows Defender on a Mac via virtualization or dual-boot and encountering a 'p...
How to Fix Windows Update Error 0x800f081f with Manual Download
You see error 0x800f081f when trying to install a Windows update, often a feature update or cumul...
How to Improve Remote Desktop Performance Over VPN
If you're connecting to a remote PC via Remote Desktop (RDP) over a VPN, you've probably experien...
Fix Windows Security Virus Protection Disabled Error
If Windows Security shows that virus & threat protection is disabled or turned off, you may see a...
Topic paths
Quick titles
How to Enable Security Auditing for Windows Security LogHow to Resolve 'Not Recognized' in Command PromptManual Windows Update Cache Clearing GuideTroubleshooting Missing Teams Cache FolderChrome 504 Error Troubleshooting ChecklistFix Windows Security Authentication Failed Smart Card Not WorkingChrome Update Error: Profile Module MissingFix Remote Desktop Error 0x4 Extended