"Files" , "New Window" give an error in quick books online app

Hi, oosthuizengysber.

May I asked what specific error your getting? This way, I can check if there are any open investigations about it.

For now, resetting the QuickBooks application is a good start when it comes to fixing program-related issues. Here are the steps to complete the process.

1. Click Help on the navigation bar at the top.
2. Select Reset App Data.
   
3. Allow a moment for the process to complete, and then close the app.
4. Be sure to right-click the app and Run as Administrator when re-opening.

If the issue persists, you can uninstall the application by following the outlined steps in this article: QuickBooks App for Windows and Mac: General support. Also, this write-up contains additional details regarding QuickBooks application's system requirements.

I've got your back if you need more help with the QuickBooks app. I'd be more than willing to lend you a hand.