Files on Win 2012 R2 file server suddenly compressed

[ZENYO]

Hello

Files on my windows 2012 R2 File server have been Suddenly compressed, I don't use NTFS Compression. After some investigating it looks like only files that have been "Last Accessed" before 2012 were compressed. Once again not something that I did and I can't figure out a way to do that even if I wanted to. I am using shadow copy with DFS Replication and I looked at a copy of some of the files from the previous night, 7pm, and the files were not compressed. Apparently disk cleanup can do this but that wasn't run on the server and I don't know if disk cleanup can cleanup based on a date range.

Thoughts?

 

[markdmac]

Are you the only person with admin rights to the files?

I hope that helps.

Regards,

Mark

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[ZENYO]

No, but before I chat with the admins throughout the org I would like to understand how this could even happen. I still can't figure out how to compress files based on a date range. Third party application maybe?