Access Denied Exception

Hey Nazarius, When you are trying to connect to another system from your local machine, you need to set the system password of that machine and then try to access that system, it is kind of recommended standards whenever you need to access another machine from your machine.

Step-1, set up a password to the machine which you want to integrate with Orchestrator(please refer: Windows Articles - dummies)
Step-2, updated the same in UiPath Orchestrator robot section and then try.

Please try the above steps and let me know.