
Windows Defender Troubleshooting Checklist
Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background, but s...

Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background, but s...

If your Windows Security backup isn't syncing, you might see a message like "Backup sync pending"...

After a Windows update, you might see SSL certificate errors in Windows Defender or other applica...

When you try to clean up Windows Update files and see errors like "file is locked" or "in use", t...

You click a file in File Explorer expecting it to download from OneDrive, but nothing happens—or ...

When you set up a new PC, Windows Defender (now called Microsoft Defender Antivirus) is already a...