I too could not connect last week, so I tried logging in with the secure browser option on the log on form, this worked fine but today I noticed there was an update on the loaded MFP screen and assumed it was the fix so I downloaded it and now I cant log on with either secure browser or built in form, I'm assuming my error message is the same as others?
{error: Unable to send request, 33, code: The handle is in the wrong state for requested operation}
Happy to test OXA if needed...