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Windows 7: Deleting of Windows Installer Cache (C:\Windows\Installer\) Files

31 Jan 2012   #1
Capt.Jack Sparrow

Windows 7 Ultimate - 64-bit | Windows 8 Pro - 64-bit
Deleting of Windows Installer Cache (C:\Windows\Installer\) Files

Windows Installer Cache, the c:\windows\installer folder by default, is used to store important files for applications installed using the MSI Windows Installer technology and should not be deleted manually.


My System SpecsSystem Spec
03 Feb 2012   #2

W7 Ultimate SP1, LM18.3 MATE, W10 Home, #All 64 bit
Thanks Capt.Jack Sparrow

Thanks for that information. :)
My System SpecsSystem Spec
03 Feb 2012   #3

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE

I've never messed with that folder, but after reading the article, it makes me wonder about the validity of using Acronis's Universal Recovery procedure to use an image of one machine on another. I've never done that either, but that was the primary reason that I bought the latest version of True Image.
My System SpecsSystem Spec

03 Feb 2012   #4

Windows 7 x64 Ultimate

Hmmm, I don't seem to have that folder....
My System SpecsSystem Spec
03 Feb 2012   #5
Layback Bear

Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64

I found that folder and it has lots of things in it and I will leave it alone. Could something messing with this folder also stop Windows Updates?
Thanks for the information.
My System SpecsSystem Spec
04 Feb 2012   #6

Win7 Ultimate x64 SP1 / WCP x64 / Ubuntu 11 x64

I once removed that folder ages ago (xp days) just to save some space but I knew it was important years later. Thanks for the information!
My System SpecsSystem Spec
05 Feb 2012   #7
A Guy

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium x64 SP1

Quote   Quote: Originally Posted by fseal View Post
Hmmm, I don't seem to have that folder....
You must untick Hide protected operating system files (Recommended) to see it

A Guy
My System SpecsSystem Spec
06 Feb 2012   #8

Windows 2000 5.0 Build 2195

Hmm.. Usually if I see folders with lots of files I delete it immediately to save space. Tried deleting system32 once but it did not finish saying it's in use or something. So when I turned off my computer, Windows would not start anymore.

Man that error messed things up!

On a serious note, thank you for the information!
My System SpecsSystem Spec
06 Feb 2012   #9

Windows 7 Professional x64

If people want to save space, turn off the Windows Update service, then go to the Windows folder and delete the contents and folders under the SoftwareDistribution folder, then turn Windows update back on. You can recover up to a couple GB of space that way. The only nuisance is that if you have hidden any updates, you will need to rehide them since it resets Windows update to its default.
My System SpecsSystem Spec
06 Feb 2012   #10
Kevin Ismail

Windows 7 Ultimate x64

I find my safest way is through disk cleanup and tick all offered file. And of course Office installation cache.
My System SpecsSystem Spec

 Deleting of Windows Installer Cache (C:\Windows\Installer\) Files

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