Is csrss.exe a trojan?

I only have 4:


The CLSID C:\Windows\winsxs\amd64_microsoft-windows-csrss_31bf3856ad364e35_6.1.7600.16385_none_b4d8d57efdc6b4f3 must have been popular, all the ones of mine are the same as yours jm.

Steve try using this little program and see how many you find.

Everything Search.

https://www.voidtools.com/

Layback Bear said:

Steve try using this little program and see how many you find.

Everything Search.

https://www.voidtools.com/

Just those same 4 from the Explorer search, Jack. I tried both the x86 and x64 versions and 4 is the lucky number for me.

Strange.
I have 7 dated 2009 when the operating system was was built using a Microsoft DVD OEM Builders Windows 7 64 Pro.
Maybe along the way I have taken ownership of some things I didn't need to.

If you can try that program I suggested.

Layback Bear said:

Strange.
I have 7 dated 2009 when the operating system was was built using a Microsoft DVD OEM Builders Windows 7 64 Pro.
Maybe along the way I have taken ownership of some things I didn't need to.

If you can try that program I suggested.

Jack, if you're referring to voidtools' Everything Search I have tried it and it only found 4 entries.

From post #51:

Anak said:

Just those same 4 from the Explorer search, Jack. I tried both the x86 and x64 versions and 4 is the lucky number for me.

   Note

That should have read:

Just those same 4 from the Microsoft Explorer search, Jack. I tried both the x86 and x64 versions of voidtools Explorer, and 4 is the lucky number for me.

Apologies for any confusion Jack.

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jmrathbun said:

I would be interested to hear from anybody who knows the normal function of the c:\windows\winsxs folder.

From the horse's mouth:

The Windows component store (C:\Windows\winsxs) directory is used during servicing operations within Windows installations. Servicing operations include, but are not limited to, Windows Update, service pack, and hotfix installations.

Source, from the Cause section: https://support.microsoft.com/en-us/kb/2795190

In other words, the winsxs folder is used to store all install and uninstall files, and windows packages. Not only the current version of a component, but also the previous ones and, out-of-band releases. So, it will grow over time.

And, in even simpler terms; The winsxs (win side by side) Folder is the operating system's (OS) cache.

It used to be a pain to glean until an update allowed it through Disk Cleanup, see step #5 under Here's How: To Delete Unnecessary System Files What happens is the list to pick from gets expanded and you can pick from there.

There is a member here that used to cleanup system files manually and he had a thread on it, but I can't find it at the moment; He called it his hallelujah moment when microsoft included it in updates, and he could stop doing it manually, I understand he still checks it manually just to make sure it's still working. I believe I installed the KB during normal Tuesday patches about a year ago.

Layback Bear; Do you know who I am trying to think of?


Related Links:

http://WinSxS Folder in Windows 7 / 8 / 10 explained | www.thewindowsclub.com

http://What is the WINSXS directory in Windows 2008 and Windows Vista and why is it so large? | blogs.technet.com

Sevenforums search for: http://Delete Unnecessary System Files | www.sevenforums.com

Google search for function of the c:\windows\winsxs folder; And, purpose of winsxs folder in windows 7

That is correct. The suspicion comes into play when you experience any of the symptoms I mention earlier or you have an unexplained plethora of csrss processes.

You can now breathe in - breathe out.