Prerequisite check CheckActiveFilesAndExecutables failed error code 73 msvcr100.dll LOCKED - NOT!
Problem Description
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Applying Windows Patch 30901451 on 18.x EE database Home.
Initial pre-requisite check passed with no conflicts. Ran procexp.exe and NO files under the Oracle_Home were in-use by any processes (all Oracle services shutdown).
Tried opatch apply. Got 3 messages saying 3 DIFFERENT msvcr100.dll files are locked and active. BUT! procexp.exe shows NONE of those three DLL files are locked! Instead a search in procexp for this DLL shows the same file-name in C:\windows\system32 is locked by three programs/processes (sqlserver.exe, Veeam endpoint service, and sqlwriter.exe).
So opatch is BUGGY (or patch CheckActiveFilesAndExecutables check is BUGGY), because NONE of the msvcr100.dll files under the Oracle_Home!