Windows Installer folder and CSC folder taking an insane amount of space on drive

  • Thread starter Thread starter LucasDerboule
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LucasDerboule

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Ahoy!

And good day to you.


My overall Windows folder takes 80.8 Go of space on my hard drive, a ludicrous amount (I have a 256 Go SSD as primary drive C:)


According to TreeSize(Free):

- Windows Installer folder takes 37.5 Go of space

- CSC folder takes 23 Go of space, almost entirely due to what seems like an old copy of large files I had stored on my NES - as a "shortcut" maybe??

exact location is CSC\v2.0.6\namespace\[NameofNES]\[bunch of subfolders]


About the files in the CSC folders, I have tried to manually delete them but keep getting a "You must possess Admin rights to delete this file" error. I have followed all the tutorials regarding ownership of system folders and my user account does have all the rights for this folder and subfolders. Yet error message remains.


According to another topic on this forum, it is not possible (strongly advise against) to manually files in Windows Installer folder.


Last week I constacted the Microsoft support and they set me up for a "Windows repair" session, which, once completed, had cleared something like 15-20 Go. But less than a week later I'm back to the same space usage I had before.

I have also properly deleted the Windows.old file created following this "repair".


Has anyone experience anything like this and would have some tips/hints on how to get rid of these problems?

I would very much appreciate any help, before I resolve to a complete re-installation.


Thank you,

Lucas


PS: not sure if related to the Windows Installer folder size, but my current version of Win 10 is a free upgrade from a WIndows 7 pro version I had installed.

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