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We've recently discovered that recent security update KB3087985 for Windows XML core services that was released to Windows 7 Clients on August 11, 2015 is affecting the Endpoint Protection client during a full scan causing the full scan to stall. The results of the scan stalling have varied by client but include:
Delays or timeouts in accessing files directly via a Network File Share (Ex for Missouri State: Bear1 or Sabrina, etc.)
Any files downloaded via Internet Explorer are getting stuck on a Security Scan during the download process.
Issues with browsing from Internet Explorer.
Instability in other applications that rely on a network file share to function.
For Support Specialist, we notice event errors in the System Log of an affected workstation: “A timeout (30000 milliseconds) was reached while waiting for a transaction response from the MsMpSvc Service." Event 7011.