Fix Missing Windows Security After Update
After a Windows update, you might find that Windows Security (formerly Windows Defender) is missi...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Update Error 0x80070643: Practical Steps
You run Windows Update and get error 0x80070643. The update fails, often with a generic message. ...
How to Run PowerShell Scripts on Mac (Using PowerShell Core)
If you're trying to run a PowerShell script on a Mac, you'll quickly find that the classic Window...
Fix 'Windows Defender Command Not Found' in Windows 10
You open Command Prompt or PowerShell, type something like MpCmdRun or Get-MpC...
Task Scheduler File Locked: Causes and Fixes
When a scheduled task fails with a "file locked" error, the task cannot access its executable or ...
Fix OneDrive Sync Permission Denied on Mac
If you see a "permission denied" error when OneDrive tries to sync files on your Mac, the sync st...
Topic paths
Quick titles
Teams Service Unavailable Error TroubleshootingWindows Search Service Not Running – How to FixBitLocker TPM Error: Group Policy Recovery GuideFix Command Prompt Offline Installer Not Working on Windows 7How to Break an Outlook Login LoopFix Windows Search Not Connecting to SharePointHow to Restore Defender Defaults SafelyChrome Profile Corrupted? Here's How to Fix It