You will also see this error when using a VPN to connect. I had a work laptop that you would log in using domain credentials. Then you would connect to the VPN. At the end of the day, I would disconnect from the VPN, then lock but not shut down my laptop. It might take a day or two for the AD token to get stale and then the server would throw the same error. I got in the habit of doing a complete shutdown at the end of the day.