Since I spent a few days debugging this one...I thought I would share :)
Work Around:
Remove OpenText Socks Client V14 (for now)
Error:
INFO interface: Machine: error-exit ["Vagrant::Errors::VMBootTimeout", "Timed out while waiting for the machine to boot. This means that\nVagrant was unable to communicate with the guest machine within\nthe configured (\"config.vm.boot_timeout\" value) time period.\n\nIf you look above, you should be able to see the error(s) that\nVagrant had when attempting to connect to the machine. These errors\nare usually good hints as to what may be wrong.\n\nIf you're using a custom box, make sure that networking is properly\nworking and you're able to connect to the machine. It is a common\nproblem that networking isn't setup properly in these boxes.\nVerify that authentication configurations are also setup properly,\nas well.\n\nIf the box appears to be booting properly, you may want to increase\nthe timeout (\"config.vm.boot_timeout\") value."]
Problem Description:Installed Virtual Box 5.1.2 and Vagrant 1.8.5 on Windows 7, on hashicorp/precise64 ... vagrant up would never get past replacing insecure key and eventually time-out. Seperate SSH client direct to precise64 would fail with connection refused.
Error In Virtual Box Log:
00:00:11.628421 supR3HardenedErrorV: supR3HardenedMonitor_LdrLoadDll: rejecting 'C:\Program Files\Open Text\SOCKS Client\HumSOCKS.dll' (C:\Program Files\Open Text\SOCKS Client\HumSOCKS.dll): rcNt=0xc0000190
I think there was SSH error in virtual box log.
I think my problem is solved now (socks client not needed presently) ... but since a weird anomaly I thought I would share.