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Microsoft Update Breaks Some Anti-virus Software

April 22, 2019

Apparently, the April 9^th security update from Microsoft wasn’t too kind to several anti-virus vendors according to a post on Threatpost. According to Microsoft, the update resulted in some computers having slow startup times, sluggish performance or becoming completely unresponsive. Several anti‑virus products are impacted. The current list includes Sophos Endpoint and Sophos Enterprise Console, Avira antivirus software, ArcaBit antivirus software, Avast and McAfee Security Threat Prevention 10.x and McAfee Host Intrusion Prevention 8.0.

Microsoft said, “After installing this update, some customers report that authentication fails for services that require unconstrained delegation after the Kerberos ticket expires (the default is 10 hours). For example, the SQL server service fails.” In other words, the update broke your computer. If you are running one of the impacted software, check with the vendor to see if there is a workaround until the problem is resolved. As an example, Avast is offering a “micro-update” that “should resolve the issue and restore functionality.”

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