Just installed the 6.10 host on three computers in a remote office. Two windows 7, 1 windows server 2008. All three show as online in my viewer (also 6.10) but give "At least one authorization method must be enabled on remote host" when I try to connect.
Visited the office location today, unable to connect while on the same network using internet-ID either.
Could you please clarify if the issue persists (i.e. you receive the same error message) when you try connecting to the same Host fr om another Viewer located in another network? If this is the case, then could you please try uninstalling the Host completely as described here? Then please try reinstalling the Host from scratch using vanilla (i.e. default) installation file available on our website on the Download page and see if it's possible to connect to this Host. Alternatively, you can also try downloading a vanilla no-install Agent module, run it on the same remote machine wh ere the issue occurs and see if you can connect to this Agent.
Please let us know if the solutions above did not help and the issue persists.