'Same Authentication key cookies at browser for 2 different webapp/website

I have created A asp.net core webapp [say A] and used Identity framework for Authentication and authorization, then created anothe asp.net core webApp [say B] by copy-paste of some file from project/App A. Now I am automatically get logged out from A when logged in to B. I want to know is there any unique Application/session keys saved in browser cookies for both Sites/Apps



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