File transfer refused

ABCStreet12

Hi
I use TV between my Home Office to my company's office.
One day to another it became useless. I can'ttransfer files any more.
At my home runs on Win11 64b everything including TeamViewer is up-to-date
At the Office runs on Ubuntu. Updated few days ago.

What's next? No detailed information why file transfer is refsed.
All the required settings is ALLOWED.

ps. Remote Control is working without problem

Please help.