Windows 7 - Black screen at logoff / switch user

Since July 5, some of our Windows 7 Enterprise machines started showing black screen and becoming unresponsive at user log off / switching users. No changes have been made in our environment; nothing in common between these production computers as well. It's strange that this behavior is only observed on some PCs, others are fine. All PCs are Lenovo desktops and laptops, Win7 64-bit, SCEP installed, they have different graphics cards and different set of software installed. All have the same error message in the EventLog: 4005 - Windows logon process has unexpectedly terminated. I'm now running an AV scan, but maybe someone noticed this issue too, or has any ideas? Thanks!

2 answers

  • answered 2018-07-09 05:56 Admin

    Try disabling SCEP for a workaround. We have been getting these during last week and still searching for the root cause.

  • answered 2018-07-09 08:44 Dan Chan

    We're seeing the same issue.

    As per this post on another thread

    "use MpCmdRun.exe to remove definition (MpCmdRun.exe -RemoveDefinitions -All) and search new update definition, this solve the problem."