I have an Angular app that uses MSAL.js and when I try to get an access token I'm receiving the following error:
AADB2C90077: User does not have an existing session and request prompt parameter has a value of 'None'.
I was passing the wrong scope value; I had a typo in my tenant name:
this.userAgentApplication.acquireTokenSilent('https://{tenantname_with_typo}.onmicrosoft.com/webapi/read')
来源：https://stackoverflow.com/questions/47823447/aadb2c90077-user-does-not-have-an-existing-session-and-request-prompt-parameter