In theory, our AUT does not require elevated permissions. Because I am opening the AUT under a different user, which uses windows auth, I needed this. Which ... I honestly do not know why.
When I test manually, I do not open my AUT with elevated permissions.
Champion Level 2> I am opening the AUT under a different user
This might explain things.
It is my guess, that initially, when you were creating NameMapping, you started application using your credentials. If my guess is correct, then TestComplete was executed in the same context (yours) and did not require elevated privileges to access application's internals.
When application was started using different user credentials (i.e. it was started like 'Run As...', not by just logging-in as some user), then TestComplete and application appeared to be in different contexts and thus TestComplete required elevated privileges to get access to the application's context.
https://support.smartbear.com/testcomplete/docs/testing-with/tested-apps/desktop/run-modes/run-as/index.html and related articles might provide additional information.
