
Windows Defender Access Denied Troubleshooting Checklist
You try to open Windows Defender or run a scan and get an "Access Denied" message. This usually m...
Software troubleshooting desk

You try to open Windows Defender or run a scan and get an "Access Denied" message. This usually m...

If you're running Windows 10 and get an error when trying to update PowerShell—either via U...

When running Windows Update, you might see an error message like "404 Not Found" or code 0x802440...

If you dual-boot Windows and Ubuntu, Windows Defender may flag Linux partitions, boot files, or t...

You open OneDrive and see a 502 Bad Gateway error when syncing files. This usually means a tempor...

If you see error code 0x80070005 when launching Chrome, it usually means Chrome can't read or wri...