Published Apr 12, 2012 | Updated Sep 15, 2017

Rogue:Win32/Sirefef

Severe |Detected with Windows Defender Antivirus

Aliases: ZeroAccess (other) Zero Access (other)

Summary

Windows Defender Antivirus detects and removes this threat. See the Win32/Sirefef description for more information.

The following free Microsoft software detects and removes this threat:

Even if we've already detected and removed this particular threat, running a full scan might find other malware that is hiding on your PC.

Get more help

You can also see our advanced troubleshooting page for more help.

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

Additional removal steps

Note that as part of the cleaning, our software might change some Windows services back to their default settings. If you had previously changed these settings, you might need to change them again.

The services that are reset include:

  • BFE – Base Filtering Engine
  • Iphlsvc – IP helper Service
  • MSMpSvc – Microsoft Antimalware service – MSE/FEP/SCEP
  • Sharedaccess – Internet Connection Sharing
  • WinDefend – Microsoft Antimalware service
  • Wscsvc - Windows Security Center
Advanced troubleshooting

See our advanced troubleshooting page for more help and tools if you're having trouble with Win32/Sirefef.

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