We have discovered an issue with one of the patches from March 2015, KB3035131 against our Windows 8.1 systems in VMware VDI. Upon installation of this patch, Windows 8.1 systems are unusable as they are presented with a LogonUI.exe error on startup as seen below. In order to get the systems in working condition, the only resolution at this point is to revert to a previous snapshot and disable the 3035131 patch from installing on these Windows 8.1 systems.

There’s not much info on the Internet regarding this particular issue, or at least one that I can find, however there are some mentions of the use of StartIsBack or Classic Shell, but we are not using them. It will be interesting to know if others have encountered a similar experience, what are the known causes, and if there’s a fix to rectify this issue.