Skype misidentified as malware
Earlier this week, security researchers at the Microsoft Malware Protection Center discovered that some Microsoft antimalware products such as Windows Live OneCare were incorrectly identifying some versions of Skype as malware. Such products may stop Skype’s operation and falsely notify the user about the following malware: Trojan:Win32/Vundo.gen!D.
The issue may have affected users of the following Microsoft antimalware products: Microsoft Forefront Client Security, Windows Live OneCare and Windows Live OneCare Safety Scanner. Microsoft has already released an update (a fixed signature file) which was pushed to users of Microsoft’s antimalware products.
Once the fixed signature is deployed, Skype should be able to run normally. The fix is included in signature files version 1.31.9121.0 and higher. More information is available here.