go to control panell - choose network connection or sharing centre - click on hamachi network connection right mouse and choose 'disable'. after few min do it again only this time choose 'enable'
I had this issue and none of the suggestions I found worked. In the end it turned out to be the operating system on one of the machines. I had one running Vista and one Win7. No matter what I did I had a tunnel problem. Upgraded the Vista machine to Win7 and it works perfectly.
I am noticing a lot of people have this problem, and so have I. I fixed it by (on windows 8)
1: Press START + R
2: type services.msc and hit run
3: Look for LogMeIn Hamachi tunneling engine
4: Stop the service and restart it
5: It should now work
Well, it worked for me
The thread was already revived, so I'll give my take on it.
If you check in Network and Internet > change adapter settings and you check for the actual driver for hamachi, It doesn't show up for my windows 8. I just have my wifi, lan, and tunngle. Anyone have any ideas?
Omgard fix involving restarting the LogMeIn tunneling service got rid of the exlamation marks for me aswell. Thanks.
I find it somewhat strange that this is not one of the steps included in the FAQ linked in this thread.