
Fix Windows Defender High Memory Usage
If you notice Windows Defender (Microsoft Defender Antivirus) consuming a lot of memory—sometimes...
Software troubleshooting desk

If you notice Windows Defender (Microsoft Defender Antivirus) consuming a lot of memory—sometimes...

When Windows Defender locks a file, you often see errors like 'Access denied', 'File in use', or ...

After a Windows or Office update, you might notice that your OneDrive sync settings have reverted...

You see a message that the Windows activation module is missing or not found, often when trying t...

If Windows Security won't open, shows a blank screen, or throws errors like "Security service has...

You open Windows Security (formerly Windows Defender Security Center) and see only a blank white ...