ContentLibraryCleanup.exe Taking Forever to run!
Been running this quite a bit in an environment that has had a lot of invalid content out there. I happened to notice today massive disk I/O was used while this tool ran, and Resource monitor showed MsMpEng.exe was the culprit. I added a process exclusion for the exe path I have been running ContentLibraryCleanup.exe out of locally on the DPs to the Antimalware policy I have deployed to my DPs, and the tool ran very noticeably faster than prior.
Just a heads up!