Problems when runing automated tests on a virtual machine

Our company is using TestComplete and Testexecute for automated tests. These test run without problems when recorded played back using a pc (without pipeline).
Then we decided to go a step further and include TestComplete /TestExecute in an azure Pipeline. 
So we set up a virtual Pc and installed TestExecute.
On our normal Pcs (where we used TestComplee/TestExecute before) we followed the steps to incluce git and connected the testsuite to an azure pipelin we created before.

On the virtual PC we set up a user with autologin as this is needed to run the automated tests.
Then we connected the pipeline/agent on the virtual pc so that "when a task is found for the pipeline" these task will run on the virtual pc starting TestEcecute and doing the tests.
If we now connect to the virtual machine  (with the user mentioned before via Remote Desktop connection) an watch the pipeline and there is a "todo" while we are watching the test on the virtual Pc were ok.
after watching we always use the recommended disconnect batch to disconnect from the virtual machine.
We then found out that if we are not watcing /logged in with the user on the virtual pc, the test always fail when the last login was more then 10 minutes ago (this was hard to find out as we did not think of a timeout).
Afters some research we also found that there (at least on virtual Pcs)  is a registry key/group policy at:
"Local Security Policy\Local Policies\Security Otions\interactivelogon" named
"Machine inactivity timout" 
This was set to 600 (seconds).
We then set it to 0 (infinity) and now all test are runnig ok even if the las login is e.g 24h ago