Fix Outlook Sync Issues Caused by Windows Search Service
If your Outlook stops syncing emails, calendars, or contacts, and you notice high disk or CPU usa...
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View listTroubleshoot 504 Gateway Timeout in Windows Security App
When you open Windows Security (formerly Windows Defender Security Center) and see a 504 ...
Fix Windows Security High Memory Usage Error
If you notice your system slowing down and Task Manager shows Windows Security (or Antimalware Se...
Fix OneDrive Authentication Failed in Office 365
You see "OneDrive authentication failed" when signing into Office 365. This usually means OneDriv...
How to Fix Windows Defender Not Turning On
Windows Defender (now called Microsoft Defender Antivirus) sometimes refuses to turn on or stay o...
Windows Defender Scan Stuck at Certain Percentage: Fixes That Work
If you run a Windows Defender scan and it stalls at the same percentage every time—often 85%, 93%...
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