Are you using Windows 11?
Still Dorico 3.5.12 isn’t listed officially as Compatible for Windows 11.
Also check the driver for your interface if there is one that officially supports Windows 11.
According to your settings in Cubase and Dorico, they both should be able to share the audio interface, especially since they work fine separately.
By the way it could be an e-Licenser issue, too…
Do you get any message when you start Dorico while Cubase is active?
I know that Cubase and Dorico and even my Driver isn’t officially supported on Windows 11 yet, but not sure that’s the issue even though it’s very possible.
Your theory on the e-licenser though could be. This is if I have Dorico open and try to start Cubase. If I try it the other way around I get no error, but Dorico waits in the background for Cubase to close before it opens up.
The thing is I was able to open both up with a Focusrite interface using ASIO for Cubase and Generic Low Latency drivers for Dorico, but that doesn’t work with the Anubis.
I had this Process ID Not Found message too, but can’t remember the context - maybe something to do with my Streamdeck. Anyway, I found that running Dorico as Admin (where you have to click an OK button in a box that pops up once you’ve double clicked the Dorico icon) seems to have fixed it. So, maybe worth a try running Cubase and Dorico as Admin?
Dorico Pro 3.5 and Cubase 11 Pro on a Win 10 PC
PS sort of related, but the only way I could get my Streamdeck to work with Resolve Studio was to run Streamdeck as an Admin too.
Well, generally it’s not recommended to switch to an OS, in your case Windows 11, which is not officially supported by all vendors you are using. It’s always better and smarter to wait at least 1, or 2 years after the public release of the operating system. Keep this in mind if you would like to have stable DAW!
Obviously you are having an issue with the e-Licenser, no matter which app is launched first.
Here you have two options:
Possible process ownership issue, as @RobF mentioned in his post above.
You could set all 2 apps - Dorico and Cubase to run as Administrator by right mouse click on their shortcuts > Properties (then follow the screenshot below)
The only two glitches I had when I installed Win11 were with the elicenser and the Voicemeeter Virtual Cable. I uninstalled both, then reinstalled. The 220.127.116.117 elicenser is working fine for me now.