Aliases: No associated aliases
Windows Defender detects and removes this threat.
The ransom or "lock" screen can use the name CryptoDefense or CryptoWall.
See the Win32/Crotwi family description for more information.
Windows 10 protects you from ransomware. Read more:
More information about ransomware can be found on our Ransomware page.
Microsoft doesn’t recommend you pay the fine. There is no guarantee that paying the ransom will give you access to your files.
If you've already paid, see our ransomware page for help on what to do now.
Run antivirus or antimalware software
Use the following free Microsoft software to detect and remove this threat:
- Windows Defender for Windows 10 and Windows 8.1, or Microsoft Security Essentials for Windows 7 and Windows Vista
- Microsoft Safety Scanner
You should also run a full scan. A full scan might find hidden malware.
Get more help
If you’re using Windows XP, see our Windows XP end of support page.