I'm trying to update my server with SP3. I keep getting an error message....

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Service Pack 3 Setup error

The file c:\arcsetup.exe is open or in use by another application
Close all other applications and then click Retry

retry or cancel
-------------------------------------------------------------------------------


The file is a hidden system file....and read only.


I've used filemon and process explorer.....can't seem to check which process has the file open.

Do i need these files? I've noticed a previous post that says i can delete them....

Not sure if you found a solution or not, but I'd reboot the server, and see if the file is still in use. Also, you may wish to compare an MD5 hash of the w2ksp3.exe file... Mine reads:

fdd5aac32f63e67f0cd28c6a1d50a1e4

Exact file size:

130,978,672 Bytes

If yours differs, I'd redownload it, may have some corruption.

Hope that helps.

Adam