I hit this issue as well when going cross domain (e.g. into our test or alternate domains) since the account I use is only a domain admin in one account. If that's what is going on for you, a possible way to work around it would be to have a universal group that contains your domain admins from your primary account in the target domain, and have that group added to the local administrators group.
Even if that works, it's annoying that you would have to approach it in that manner. If I can log into a remote system, then the tool should be able to send a logoff request to that system using the credentials with which it's already connected to the resource.