Dear folks;

Whenever you have this problem in Veeam, there is an easy way to resolve

2018-11-03 11_12_23-Untitled_ ‎- Paint 3D.png

Correct the following value in the registry:
HKEY_LOCAL MACHINE \SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
Maxuserport : REG DWORD value must be in decimal 65534

2018-11-03 11_16_00-thumb_2018-07-09 17_36_24-AsBorder.png_ ‎- Paint 3D

 

Regards