This seems to be an issue with your internet service. Make sure you have a properly working internet connection.
Also make sure your DNS settings are correct, as that could also cause this error.
Zsolt is a member of the LogMeIn Community Care Team.
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Cannot resolve server name, type: [OS error], return code:  Is the error I'm getting. I've checked my DNS, all my servers are on the same switch & router, all have Hamachi installed. All are working except one. I opened a case with Logmein / Hamachi support.
They suggested I remove my virus protection & reinstall Hamachi. I did, but it did not solve the problem.
Does anyone have a viable solution?