Can't run app in mac latest OSX

Aleks
Aleks used Ask the Experts™
on
I updated my mac to the latest Catalina version and updated Visual Studio for Mac to the latest version.
When I try to run my app it won't launch the browser like it used to, instead if opens a page of the app inside VS. That's it. Nothing else happens.
I don't get any errors on the build.

Any ideas?  This started happening after updating to the latest OSX.
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David FavorFractional CTO
Distinguished Expert 2018

Commented:
Catalina finally deprecates all 32 bit apps completely.

Based on Visual Studio forums, only the most recent version of Visual Studio will run on Catalina, so you'll simply upgrade to latest version.

Author

Commented:
I did. I updated Visual Studio and it still will not launch the browser when I run it.
Do i need to delete the app entirely and download it again?

Author

Commented:
I just downloaded the latest version, reinstalled it and the same thing happens.
When I RUN the app. it only opens one of the pages inside 'models > indentity' folder inside the IDE.
But it won't launch the browser.
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Author

Commented:
In fact, it looks like it runs, then it stops, because the 'run' arrow shows again right away. And the browser is not launched.
Why does it stop ?

Author

Commented:
turns out besides having netcore 3.0 installed I need to have 2.2, which makes no sense .. sigh.

https://dotnet.microsoft.com/download/dotnet-core/2.2

Once installed it worked.
David FavorFractional CTO
Distinguished Expert 2018

Commented:
Glad you found a solution!
Commented:
Thanks. both versions of Netcore need to be installed.

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