While using MV occasionally I get a pop up indicating I've been offline for a while! then I get one indicating 'polling to network session server failed - no error' both screenshots attached

MV say its our server our IT people say its not! 

Working remotely on Windows 11pro 25h2, 1gig broadband*, Screen Connect to the office pc also running Windows 11 pro 24h2 both pcs indicate up to date with updates.

* recently changed broadband providers but its happened with both.

Anyone else had this problem? how did you resolve it?