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Location of Windows 2003 update files

Does anyone know where Windows update files are stored in the filesystem (Windows 2003)? Can I safely remove them?
4 Solutions
There are usually in C:\Windows in folders starting with $NtUninstallKB*** (where *** is the specific KB number). These can be deleted, they are only there for uninstallation of updates. Obviously this will then prevent you from uninstalling the updates.
C:\Windows\Software Distribution\Download
and yes if you have already installed them, then you can delete them safely
Fridolin MansmannMaster of Business Engineering ManagementCommented:
C:\WINDOWS\system32\SoftwareDistribution, but this folder will fill again after next Windows Update
(contains information about installed patches...)

you can savely delete in C:\Windows the directories $xxUninstallxxxxxx.... and in case of an SBS server also $ExcheUninstall...... IF YOU ARE SURE THAT THE SERVER IS RUNNING FINE AND IF YOU DO NOT WANT TO UNINSTALL THESE HOTFIXES
Keep in mind that you will have go to your Folder Options, and use the option to Show Hidden Files and Folders so that you will actually be able to see the $NtUninstallKB*** folders under C:\Windows.
R7AFAuthor Commented:
Thanks you all! We had a server that suddenly filled up all space on C. I tried to delete as much as possible, but everytime I did this it took only minutes to fill up again. The strange thing was that the hard disk filled up til 20MB, and then suddenly it freed up to 1GB. Then every second about 5MB disk space disappeared. This process kept on repeating.

In the end, after setting the option in Explorer to display hidden system files (not only hidden folders), it turned out there was a windows catalog running (C:\System Volume Information\catalog.wci\0001002C.ci) which caused all this. I've deleted this catalog, and disabled indexing service for the moment.

About the Windows update files, I had already deleted most hidden folders starting with $ in C:\windows. The software-distribution folder had about 300 MB in the download folder.

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