I had a problem today connecting my laptop to the SVN Server on my PC (a.k.a the Server).
The Tortoise SVN was saying something like "OPTIONS:" and then a long message saying the remote server didn't returned the information it needed.
I tried to browse with Internet explorer and instead a folder structure of my SVN repositories, I got a white page.
After a while of wondering I identified the problem - i forgot the "s" in https.
I didn't considered this as a possible problem because I expected to be presented "Remote server not found" or something like that in this case.
Have a great coding!