When you authenticate with MS Graph and EXO, EasyEntra will present the standard OAuth2 authentication dialog in your default browser:

Using the default browser allows you to utilize cached logins in your browser and supports extended authentication methods like FIDO2.
In some cases, the authentication dialog is prevented from showing, and nothing will happen when you click the authentication button:

This is typically seen when EasyEntra is launched with an admin account using Run-as-different-user and no default browser has been configured for the admin user.
There are two ways to solve this issue:
- Perform an interactive login with the admin account and start a browser, e.g. Edge, and set it as your default browser. Then sign back in with your standard account and redo the launch and authentication.
- Select “Embedded browser” in the Authentication dropdown to perform the authentication in an embedded browser instead of your default browser. An embedded browser will launch to complete the authentication request:

The embedded browser doesn’t support extended authentication methods like FIDO2 but is a convenient workaround if you don’t want to perform an interactive login with your admin account.