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Can't Create Database; Error: The request failed with error: 'userPrincipalName is invalid'. The tracking Id is '966f0775-ea66-4094-a966-79a576ba6222'.

can't create dataverse database for my developer environment;

when i click on the create button this error always appears :

" The request failed with error: 'userPrincipalName is invalid'. The tracking Id is '966f0775-ea66-4094-a966-79a576ba6222'."

i tried going to admin center; the page does not load with also a bunch of errors in the console. when i tried looking into it, it appeared that CORS was blocking the GET function; but when i unblocked CORS GET, the error was still here;


i even tried to delete all browser data and close all tabs and restart browser, no result
attached is the screen shot from admin center page console log, i am using firefox browser


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