Get Emails through ASPOSE for Office365 Users with MFA enabled

Question

I'm building an application getting emails for Office365 users using ASPOSE.

My users have MFA enabled so I can't use ROPC like recommanded in Aspose documentation

Once I get my access token, I need it to refresh when it expires.

I searched for hours in Microsoft and Aspose documentation and I'm a bit lost.

Does someone went through the same issue?

Thanks

Answer 1

Please refer to the following sections of Microsoft documentation:

• Acquiring tokens silently (from the cache)
• Get a token from the token cache using MSAL.NET
• Best practices for MSAL.NET

MSAL maintains a token cache (or two caches for confidential client applications) and caches a token after it's been acquired. In many cases, attempting to silently get a token will acquire another token with more scopes based on a token in the cache. It's also capable of refreshing a token when it's getting close to expiration (as the token cache also contains a refresh token).

Thus, you should monitor the access token expiration or force a refresh after a certain time interval (e.g. 30 min):

AuthenticationResult result;
try
{
 // will handle expired Access Tokens by fetching new ones using the Refresh Token
 result = await AcquireTokenSilent(scopes).ExecuteAsync();
}
catch(MsalUiRequiredException ex)
{
 result = AcquireTokenXXXX(scopes, ..).WithXXX(…).ExecuteAsync();
}

Also, you can refer to the blog article explaining how to use modern authentication with Aspose.Email to connect to Microsoft365.