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miffomp's avatar
miffomp
Copper Contributor
Jul 26, 2023

C:Windows\Installer accumulating files

Hello! I have a Windows 10 22H2 OS on a computer which is 9 years old, but working well (it is a high end computer). It has 128GB of disk space. 63.2GB of this space is used by a single hidden folder - C:\Windows\Installer, all of the space is taken up by multiple .msp (and a few .msi) files, which have been progressively building on my machine for the past 9 years. My question is simple - how do I get rid of the non-needed files from this directory, and why have they been accumulating.

 

There is an old Windows program called msizap which used to solve this, and a 3rd party program called patchcleaner which was created 5 years ago, but I was wondering if there could be a Windows approved way. There are a number of articles on this problem - namely https://superuser.com/questions/835026/can-i-safely-remove-msi-and-msp-files-that-are-in-c-windows-installer-but-a and https://answers.microsoft.com/en-us/windows/forum/all/my-windows-installer-folder-is-over-90-gb-does/807eb726-8cf7-4c22-8671-48e7008b57ef#:~:text=This%20folder%20is%20used%20to,it%20automates%20the%20removing%20process . The only advice I have got so far is to do a fresh install of Windows, which I cannot do as I have a linux partition that would be destroyed by doing this.

 

This problem has seemed to be around for years. There is a bug that Windows cannot seem to delete all sold files from this C:\Windows\Installer directory.

 

I therefore have two requests - the first one easier than the second:
1. A new windows program which can remove al the .msp files that are no longer relevant (doing what msizap used to do)
2. An update to Windows in a month or so which will ensure they don't accumulate again in this folder.

 

Thank you.

    • miffomp's avatar
      miffomp
      Copper Contributor

      Reza_Ameri Thank you! I am afraid I have already done both of those items. I put it here as I was recommended by customer services to do so, and as I cannot find a safe way to reduce this incredibly large folder. The feedback had a character limit, so I have put a short summary there and pointed to this request as well.

      • Reza_Ameri's avatar
        Reza_Ameri
        Silver Contributor
        There are other third-party cleanup tools but I normally won't recommend them. Since you submit a feedback, it will be checked with the Windows team.

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