Users are unable to publish workflows. They can create and save them, but when going to publish them they are either getting an error message saying that they don't have permission or they are getting a pop-up continually asking for their credentials. When they cancel out of the pop-up, they are getting a 401 error. When I checked the ULS logs it says that they don't have a windows identity. Claims to windows token service is running just fine. I as a site collection/farm admin am able to publish workflows. I'm sure I'm overlooking something simple, but I can't seem to track it down.