System Error DSETUP .dll is missing from your computer.

[HotCarlSagan]

I added the exception for the entire EQ folder in my antivirus settings. Except now that even though I stopped my windows defender from quarantining dsetup.dll, it is no longer in my EQ directory.

There doesn't seem to be one in the latest patch files either. How can I play the game without this file and nowhere else to get it? I don't have last patch (48) on my computer so I can't take from there.

[galach]

You need to download the patch files again. Your anti virus is probably deleting it on extraction.