When desktop Defender cannot clean a boot-time threat.
1) Update Defender definitions online first.
2) Windows Security -> Virus and threat protection -> Scan options -> Microsoft Defender Offline scan.
3) Allow 15-45 minutes for the offline environment.
4) Review protection history after return to Windows.
Change passwords from a clean device after cleanup.
Windows & PowerShell
Microsoft Defender Offline scan for stubborn malware
Board: Windows 11 · 53 views · Solved
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