How to Fix Windows Defender File Locked Error 0x80070020
Error 0x80070020 often appears when Windows Defender (Microsoft Defender Antivirus) is scanning a...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Task Scheduler Connection Refused on Remote Computer
When you try to connect Task Scheduler to a remote computer, you might see "connection refused" o...
Fix Windows Defender Login Loop on Windows 10
If Windows Defender keeps asking you to sign in repeatedly on Windows 10, even after you enter co...
Fix Windows Defender Access Denied Permission Error
When you see "Access Denied" while trying to run or configure Windows Defender, it usually means ...
Fix Microsoft Teams Connection Refused by Proxy Server
When Microsoft Teams shows a 'connection refused' error and mentions a proxy server, it usually m...
How to Fix Windows Security Rate Limit Error
You may see a Windows Security rate limit error when trying to open the app or run a scan. This o...
Topic paths
Quick titles
Stop BitLocker Recovery Key Prompt After Windows UpdateHow to Fix Windows Update Error 0x80073712Windows 10 BitLocker Blank Screen After Password FixResolve Chrome Profile Error OccurredHow to Fix Windows Search Network Error After UpdateHow to Fix npm Duplicate Dependency ErrorsResolve Outlook 'Permission Denied' When Opening FilesFix Outlook Crash After Windows or Office Update