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WINSXS after installing WSUS


i´had some servers with no WSUS server  configured at AD, and after configuring WSUS, I ran this DISM /online /Cleanup-Image /SpSuperseded and cleaned some space.

I´ve some questions.

-When a WSUS server is configured under AD, is necessary WINSXS folder?
-Is normal a growth of that folder even WSUS is configured ?

Any idea?

Windows Server 2008Active DirectoryWSUS

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8/22/2022 - Mon

WSUS is just  service for centrally manage updates, so you don't need to approve in install updates on computers one by one.
There is no difference for winsxs folder if you have WSUS or not. It is still necessary.

Many users have reported the issue of winsxs folder getting increased in size, this folder is basically a OS folder which you should not modifiy / play around with. OS stores dll refernce files in windows sxs ( side by side ) folder which is very much needed for OS to refer to particular version of dll.

This link tells you everything about Winsxs

Winsxs is kind of repository \ store for files needed to deploy server roles \ features

Remember, in windows 2003 if you  install any roles \ service, system always prompt you to provide OS CD.

Its not required now in 2008 as Winsxs folder contains all required files to install roles and features
Also windows can look for files in this folder dynamically as and when required.

However you may try some workarounds to compact its size with below link

Its not recommended to play with this folder without knowing what you are doing exactly.

Your help has saved me hundreds of hours of internet surfing.


After run DISM /online /Cleanup-Image /SpSuperseded the folder still takes 7,57 GB of space.

Any more idea to reduce it?



Can be used under windows 2008 R2 standar with AD and WSUS?
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They say it will work. I'm not too sure.
you could try. It will try to shrink the folder and not delete it.
Should not be harmful.

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Unless you are seriously run low on disk space i would leave the winsxs folder be..