TeamViewer on Windows10 unattended access problem

Hello,
I use a Win10 laptop to remotely access two Win10 (WS) workstations.
Everything was ok at first, but now I can not access to WS.
I can see the status of the WS on / off, the connection indicates that it can not connect to the pather.

I have already done without success:
1. I reinstalled APP on PC's
2. login / logout on PC's
3. Log in to the webpage with my account.

I thank you for helping me to find the solution.
best regards.