Session negotiation failed between Windows

[RedBoss]

Hi,

I am setting up a very basic proof of concept between 2 windows computers. My environment is below:

– 2 Windows 10 1809 LTSC computers

– 1 is acting as the host running NoMachine Enterprise Desktop and the other is the client running NoMachine Enterprise Client

– Both machines are Workgroup machines on the same LAN connected to the same switch.

– Both machines do have Level 1 CIS baselines applied containing Local policies.

I have allowed TCP/4000 in the local firewall and when I attempt to connect to the host from the client, I enter the local account name/password and click send. On the host I click Accept and then on the client it immediately displays “The session negotiation failed”. I have tried both local accounts, local admin account as well as enabling the guest sharing mode.

I am out of ideas. Any help is much appreciated.

[RedBoss]

Hi,

Just like to say that permissions for nx user were missing from local policies and that a reinstall of the software resolved this for me.

Thanks

[Britgirl]

Ok RedBoss, thanks for letting us know.

[zaq]

Hello RedBoss,

Could you let us know which local policies were missing?
Do you also use Active Directory?

[RedBoss]

Hi Zaq,

It was missing:

– Act as part of the operating system

– Log on as a service

– Adjust memory quotas for a process

– Replace a process level token

Not using AD, this is just local workgroup for now.

Thanks,

[Author]

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