Thanks for trying out Exchange support in Thunderbird! Thunderbird doesn't currently have an application registered with Okta's identity platform, which is what is required for OAuth to work, but since Okta seems like a large identity provider, I think the solution to this is for us (Thunderbird) to register an application ID with Okta and add another OAuth provider to Thunderbird's list of providers to streamline this for all users from orgs that use Okta. From a quick look at the documentation, I'm not sure what the OAuth scopes look like for mail and mail folder access and how they integrate with o365. OAuth API integration: https://developer.okta.com/docs/guides/implement-oauth-for-okta/main/
Bug 1999328 Comment 1 Edit History
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Thanks for trying out Exchange support in Thunderbird! Thunderbird doesn't currently have an application registered with Okta's identity platform, which is what is required for OAuth to work, but since Okta seems like a large identity provider, I think the solution to this is for us (Thunderbird) to register an application ID with Okta and add another OAuth provider to Thunderbird's list of providers to streamline this for all users from orgs that use Okta. From a quick look at the documentation, I'm not sure what the OAuth scopes look like for mail and mail folder access and how they integrate with o365. OAuth API integration: https://developer.okta.com/docs/guides/implement-oauth-for-okta/main/ Okta's Office365 page: https://www.okta.com/integrations/microsoft-office-365/