Error "Unable to establish a connection to rdp server ..." when connecting through Remmina. What to do?

Yesterday, the first day successfully worked on remote using Linux image and program Remmina to connect to a work PC. Successfully worked all day and a little overnight but when I woke up this morning stumbled across an error "Unable to establish a connection to rdp server".
Prior to that, tried to work through laptop Windows using "Connect to remote desktop", there constantly appeared the warning "an internal error has occurred", while trying to go to my IP and I could enter and asked some of my colleagues to enter my password and again salacity account , and then 20-30 minutes worked , at best a couple of hours and all ended without the opportunity to connect on the new.
April 19th 20 at 12:29
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