When running multiple Mendix apps locally I usually do the following per project:
- In Project > Settings > Configuration > Server > Root URL: http://{appname}:{portnumber} (make up different appname and port number per project)
- In your hosts file in C:\Windows\System32\drivers\etc add the different appnames with local ip address like so:
127.0.0.1 appname_1
127.0.0.1 appname_2
127.0.0.1 appname_3
Now you can run all the different apps and view them within the same brower (in tabs) without having issues with the sessions.
Try Project > Settings > tab Runtime > setting “Multiple sessions per user”. Default value is yes, so maybe you still need something else.
I use Firefox multi account containers to handle different sessions. https://github.com/mozilla/multi-account-containers#readme
I am not sure that it will solve it when running 2 mendix applications though.