Windows Security App Missing in Windows 11: How to Restore It
If you open Start and type 'Windows Security' but nothing appears, or you get an error when tryin...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Search Error 0x80070490: Cannot Connect
If you see "Windows Search cannot connect" with error code 0x80070490, it usually means the Windo...
How to Stop and Restart Windows Update Service
If Windows Update is stuck downloading updates, keeps failing with error codes, or won't start at...
Fix Windows Defender DNS Error on Windows 11
You open Windows Security and see a warning about a DNS error, or Windows Defender cannot update ...
How to Fix Windows Update Token Expired Error
If you see a 'token expired' error when checking for Windows updates, it usually means the update...
How to Fix 'ERR_TUNNEL_CONNECTION_FAILED' on Chrome for Mac
If you see ERR_TUNNEL_CONNECTION_FAILED in Chrome on your Mac, it usually means ...
Topic paths
Quick titles
Microsoft Store Not Opening After Windows Update: FixRemote Desktop Update Not Progressing Past 0%Resolve Error 0x80070422 in Windows DefenderResolve Chrome Extension Sync Access ErrorsTeams Restore Not Completing – Troubleshooting GuideOpenVPN Connection Failed Due to Firewall – Quick FixFix Microsoft Teams Invalid Configuration ErrorRestart Windows Defender Threat Service Guide