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Windows 7: Large installer and winsxs folders

24 Feb 2015   #1

Windows 7 Ultimate x64
Large installer and winsxs folders

My windows/installer and windows/winsxs folders are 12.7gb and 12.1gb respectively. In fact, my windows folder takes up 40gb of my 68gb of usable space.

I've done some reading about this and people seem to say not to clear these out and instead to just uninstall software. However, when going into "Add or remove programs" all of my software only adds up to 2gb total. So how are there 12.7gb of installers/uninstallers for 2gb of actual software? Surely there is lots of unused stuff in there and in the winsxs folder, can I clear them out?

My System SpecsSystem Spec
24 Feb 2015   #2

Primary OS: Archlinux with Kde-Plasma5 x86-64. Secondary OS: Windows 8.1 x64. UEFI Setup.

Hello Vcize,

The folder "%WINDIR%\winsxs" mostly consists of hardlinks to system files, backup of Updates and multiple DLL file versions to keep compatibility with programs.
So yeah it is big, but the size is also fooling us cause hardlinks point to a single file to reduce hard disk space, though Explorer does not know that, so the size is much smaller than it seems.

To decrease the size, first fully update your system to get the update for the option 'Windows Update Cleanup' in 'Disk Cleanup' which came originally from Windows 8.

Also i recommend you use Ccleaner to remove other kind of temporary files and history.

Good luck ^^.
My System SpecsSystem Spec
26 Feb 2015   #3

Windows 7 Ultimate x64

Unfortunately I've already done the disk cleanup that includes Windows Update Cleanup. I will give Ccleaner a look.
My System SpecsSystem Spec

26 Feb 2015   #4

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64

You could try a decent uninstaller and see what that reveals.

Good free one here Soft4Boost - Soft4Boost Any Uninstaller Removes Programs Easily and Completely
My System SpecsSystem Spec
26 Feb 2015   #5

W7 Ultimate SP1, LM18.3 MATE, W10 Home, #All 64 bit

If you have been using your install for a long time and you have installed a lot of software (even if you have uninstalled it) space seems to be gobbled up for no apparent reason.

When I have performed a clean install and reinstalled the latest versions of the software I use, the overall size of the install is smaller.

Here's my OS partition:
Large installer and winsxs folders-disk-usage-2015-02-27-.png
I suspect that in a few months time I will be using more space, even if I don't install anything new.

My System SpecsSystem Spec

 Large installer and winsxs folders

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