RPC server is unavailable

Some times if you are trying to RDP into the server you will get following message:

" The system cannot log you on due to the following error:

The RPC Server is uvavailable.

Please try again or consult your system administrator."

Most of the times you will get this kind of message when RPC service in stop state.

To fix this issue:

Rebooting server will fix this issue because it will start the RPC service.

or

Start the RPC service from Services.msc manually.