The SDL forums have moved to discourse.libsdl.org.
This is just a read-only archive of the previous forums, to keep old links working.

Unless it totally freezes your computer, you should be able to end the
process. If you're running it through the debugger, you have to end-task
MSVC itself which will close your own app along with it. Otherwise
windows tells you "access denied" or something like that. It still
sucks, but at least you don't have to reboot.