Hamachi has been working perfectly until this morning. Now I'm getting the dreaded yellow triangle and the "Failed to connect to the network adapter" message. I've uninstalled, restarted, reinstalled, tried to install the driver manually (fails by the way) and everything else I could think of on my own but nothing works. The last thing I tried was --upd tap and --add-tap "Hamachi" as admin and the -add-tap output was this:
C:\Program Files (x86)\LogMeIn Hamachi>hamachi-2.exe --add-tap "Hamachi"
03/27 13:08:31.877 [11148] tap: add_tapdev(Hamachi)
03/27 13:08:31.883 [11148] tap: list_netdev_win32() ..
03/27 13:08:31.969 [11148] vpn: adding tap device [Hamachi] ..
03/27 13:08:31.971 [11148] tap: DiInstallDevice query03/27 13:08:31.974 [11148] tap: Collecting information...
03/27 13:08:31.984 [11148] tap: Installing driver, step 1 ..
03/27 13:08:31.994 [11148] tap: Installing driver, step 3 ..
03/27 13:08:32.051 [11148] tap: Installing driver, step 4 ..
03/27 13:08:32.060 [11148] tap: Installing driver, step 4 ..
03/27 13:12:32.203 [11148] tap: Error while installing hamachi: DiInstallDevice failed with code 000005b4
03/27 13:12:32.259 [11148] tap: Done, 1460
03/27 13:12:32.275 [11148] tap: add_tapdev() failed
So any help would be greatly appreciated.