Authentication failed, please try again

Forum / NoMachine for Windows / Authentication failed, please try again

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  • #2017

    Connecting from a laptop with Windows 8.1 to a pc with Windows 7 x64 Ultimate ( fresh install ).

    It used to work just fine.

    It appears the connection problem does not lie within closed ports or malconfigured routers.

    This is what I get from the log.

    23:37:34:447.041 NXSERVER-4.0.369[2096] ERROR: Error while trying to authenticate user:Thom. NXNssUserManager::auth returned 1
    23:37:34:447.160 NXSERVER-4.0.369[2096] ERROR: wrong ‘nxexec authentication’ for user ‘Thom’ from ‘’.

    Feel free to ask any more data 🙂


    Hi, we will need:

    1. Compressed var/log directory from server’s side (on Windows standard path should be C:\ProgramData\NoMachine\var\log
    2. Confirmation of whether you have a password set (if it’s not a password-less account)
    3. Did you reboot of the server machine after installing NoMachine.
    4. Are there other user accounts on the server machine – can you successfully log in on them via NoMachine?

    For logs, see the following article:

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