Hello Every one
i am Facing this issue for about 2 Months and i tried every posible solution but it didnt help
Error message is
There is a problem with the server
Sorry, the server has encountered an error. It is either not available or it can't respond at this time. Please contact your system administrator.

everything was working good and suddenly this error occurs i try to setup a fresh VHD but the error is same
i setup the Custom URL --> Didn't Helped
Restart the IIS multiple Time --> didn't Helped
Reinstall the VHD --> didn't help
i don't know the reason why this error showed up when i sign in after admin provisioning.
I need Help