Like user Peter, I have exactly the same problem. Finale 26 has not started since installing Windows 11, and opening individual files in musx format no longer works. As recommended by Finale support, I've tried a few things:
- Finale 26 is uninstalled and then reinstalled
- Demo version of Finale 27 installed
- Download and update of all drivers
- Change of settings, which should force Finale to load certain drivers
- Switch to compatibility mode (starting Finale with Windows 8, Windows 10 was not adjustable)
Unfortunately, none of this has led to the desired result so far. Only the welcome screen appears, you can't go any further, so you have to cancel manually using the Task Manager. I don't want to downgrade to Windows 10.
Desperate greetings, Bernd

Hello, Bernd,

Sorry to see you having these problems. Unfortunately, this is a users board. I don’t know that we will know anything more about this than Make Music Support. Let’s hope they have answers soon.

Hello Bernd,

It is unfortunate to hear that you are encountering this issue. This is not behavior that we would expect to see and most likely this is not related to Windows 11. I could not find a support ticket under your account, so I can't say at this point what could be causing the problem for you without more info. If this is something that you would like to continue to troubleshoot, please feel free to use the Submit a Request option above and we can take a closer look at this with you.