Strange behavior of the network suite

Hi,

 

Please help me to solve this issue:

 

I have one remote server as Master and another one as Slave.

Both are members of one domain. I can reboot Slave from Master, I can set Slave's base path using TestComplete. Also I can connect to Slave from Master using RDP.

But when I try to verify Slave or copy the project to Slave, it fails with error: Verification failed. Unable to create a user session on the remote computer.

 

What else can be a reason? I tried to change the Login mode, but it not helps.

 

thank you!