
Fix Windows Defender Access Denied Error Due to Malware
You try to open Windows Defender Security Center or run a scan, but get an 'Access Denied' error....
Software troubleshooting desk

You try to open Windows Defender Security Center or run a scan, but get an 'Access Denied' error....

When running Windows Update, you may see error 0x800f0831 with a message that a component is miss...

If Windows Update fails and you suspect backup software or backup-related settings are the cause,...

You're locked out of your drive, you type in the 48-digit recovery key, and Windows 10 says it's ...

If you notice your PC slowing down and Task Manager shows SearchIndexer.exe using 50% or more CPU...

If you notice Windows Security (formerly Windows Defender) using excessive memory—sometimes hundr...