I currently run 2 locally hosted wikis, both on IIS. One of which is configured with single sign on for the domain.
Uploading images to the non-SSO wiki works just fine. I have no issues there.
However the one configured with SSO gives me no end of trouble. Sometimes image uploading works, sometimes it doesn't. Searching all the threads of people who have similar issues hasn't helped, my max upload size is fine. The files are small anyways.
My ACL is very liberal, anyone should be able to upload.
I don't even know where to look at this point.
I tried just manually adding the images to the media folder on the computer that's hosting the site but that was no good either. Dokuwiki complained and wouldn't recognise them.