I'm working with a client who has a Windows Server setup, and I've developed a Python script to perform GUI automation, like clicking buttons and navigating dialogs, to recover an application after it crashes. It runs smoothly when I'm logged into the server. However, when I tried to schedule this script with Task Scheduler to run whether the user is logged in or not, it fails because it runs in Session 0, which doesn't have access to the desktop. This means the UI automation won't work since it needs an active user session to interact with the GUI. I'm seeking advice on how to effectively automate this recovery process without needing someone to constantly stay logged in. Has anyone faced a similar issue and found a solution?
4 Answers
Yep, you can't really run that kind of script in a non-interactive session. Your application may be outdated if it requires such intervention to recover. It's a frustrating limitation, for sure!
You're running into the classic Session 0 issue! UI automation without an active desktop is a real pain. If your script needs to interact with buttons and dialogs, it has to run in an interactive session. It sounds like an upgrade to a proper unattended RPA system would be ideal for your situation.
When using Task Scheduler and setting it to run 'whether user is logged in or not,' it's going to run in Session 0, which has no desktop. A common workaround is to keep a session alive by auto-login and locking the screen, or maintaining an RDP session (even minimized). Remote access solutions like VNC can also help keep the session active. However, for reliability, try to avoid GUI automation if possible by checking if your application has any CLI or API methods for recovery.
In our experience with UI-based tests on CI servers, having a dedicated server with an active desktop session is key. As much as it seems possible to sidestep the issue, you really need that desktop session for GUI automation to function correctly.
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