I'm trying to remote a mac-Laptop from a windows-Laptop with VNC Viewer 6.21.920. T'm getting this "An authentication error occurred. See the VNC Server error log for details". It's working as fine with an old version (VNC Viewer 5.1.0).

Does this sound familiar to anyone? Any ideas what I should try next to resolve this?

Thanks for any help.

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  • Did you check that the password or ssh key is well configured in may vnc viewer version ?
    – Ptit Xav
    May 11 at 11:20

1 Answer 1


May be this help : From VNC Viewer 6.19.325 for desktop computers released

In order to connect to remote computers, you must enter two separate sets of credentials; your RealVNC account email address and password to sign in, and then the system (username and) password expected by VNC Server to authenticate. It should now be clearer which set you have to enter when.

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