Suddenly I got this error message when I try to connect to already working connections:

The connection closed unexpectedly

So, it is not really network issue:

• When I boot in safe mode with networing - it is working normally.
• I have tried to use UltraVNC and TightVNC Viewers -they both work perfectly.
• I can ping the remote PC and connect with ssh.

What can be done, to get the RealVNC Viewer working again?

1 Answer

My problem was solved by repairing the windows system with Windows 10 installation media tool. It was not the firewall or something - just corrupted system files.

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