PsExec gets stuck on licence prompt when running non-interactively

Question

I have a Hudson build script which calls the SysInternals PsExec utility. Normally, when PsExec is run for the first time by a given user it pops up a dialog box asking the

Answer 1

Use the /accepteula command-line switch to accept the licence agreement.

Or set

HKCU\Software\Sysinternals\PsExec\EulaAccepted 

to 1

Caution: if the reg key above is set to 0 (EULA was declined once) then the /accepteula will not work, you have to set the key to 1 manually (or delete it altogether).