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I have a huge amount of folders under my "C:/Windows/winsxs" folder that all start with amd64_. They have sub headings ranging from "wpf" to "security" even to "netflix". The entire size of the files is 8.93.GB. What are theses? What created them? Can I delete them all?

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  • this may help superuser.com/questions/331656/… – Antp Aug 29 '14 at 0:01
  • I guess, but I am not sure if they are the same. I need something more concrete before I leave them there. – KDecker Aug 29 '14 at 0:31
  • There are many explanations of what's in the WinSXS folder. Here is one from Microsoft. – David Schwartz Aug 29 '14 at 0:42
  • To sum up some very wise advice from Micrsoft. The WinSxS folder is there to make sure your system is stable, if your system ever has integrity issues, you will want that folder @100% – Ramhound Aug 29 '14 at 0:49
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AMD64 is the codename for the 64Bit Version of Windows because AMD created the first 64Bit architecture with their AMD K8 (Athlon64/Opteron) which was still compatible to the existing 32Bit Windows.

So all AMD64 files you see are 64Bit files. No you can't delete them. You can only safely cleanup WinSxS by running disk cleanup after installing Update KB2852386 to remove Updates which are replaced by newer ones.

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