DOS/Alureon

Use the following free Microsoft software to detect this threat:

• Microsoft Defender Antivirus for Windows 10 and Windows 8.1, or Microsoft Security Essentials for Windows 7 and Windows Vista

You should also run a full scan. A full scan might find other, hidden malware. 

Advanced troubleshooting

To restore your PC, you might need to download and run Windows Defender Offline. See our advanced troubleshooting page for more help.

Protect your sensitive information

This threat tries to steal your sensitive and confidential information. If you think your information has been stolen, see:

• What to do if you are a victim of fraud

You should change your passwords after you've removed this threat:

• Create strong passwords

Get more help

You can also visit our advanced troubleshooting page or search the Microsoft virus and malware community for more help.

If you’re using Windows XP, see our Windows XP end of support page.