In rare cases, when clicking the MS Graph authentication or EXO authentication, you won’t see the browser authentication dialogue.

(clicking the arrow doesn’t open the OAuth2 browser authentication)
EasyEntra uses the same type of authentication that’s used in PowerShell 7, so you will most likely see the same behavior in PowerShell 7.
This issue is usually caused by your account’s inability to launch a default browser. The fastest workaround is to use an embedded browser instead. See this article on how to authenticate using an embedded browser. Notice that using an embedded browser does not support authentication extensions like FIDO2.
To troubleshoot the browser launch issue, you can perform the same action with PowerShell 7, i.e., run Connect-MgGraph or Connect-ExchangeOnlineManagement from PowerShell 7 (not PowerShell 5.1, as it uses a different authentication mechanism).
Invalid Proxy Settings
A typical cause of this issue is invalid proxy settings for the user.
Check if a proxy server is configured and has a valid configuration by running the following CmdLet:
PS C:\> Get-ItemProperty -Path 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings' | Select-Object ProxyServer, ProxyEnable ProxyServer ProxyEnable ----------- ----------- badproxy.com:8888 1
Important: Notice that this is a user setting. If you are starting EasyEntra with RunAs in an admin account context, you must also start PowerShell using the same RunAs credentials before performing the above-mentioned tests.