Having issue with your Moodle, specifically no longer being able to get to the manual login page when using either of these URL’s

https://yourMoodle/?noredirect=1

or

https://yourMoodle/login/index.php?noredirect=1

Do check that this is switched on

https://yourMoodle/admin/search.php?query=forceredirect

If you have lost access to your frontend in is in mdl_config_plugins

Check whether you Office365 plugins page is all verified, click the button, if yours is not in a state with green ticks as the below screenshot.

https://yourMoodle/admin/settings.php?section=local_o365

Reason this is needed is taken from the manual below – Why this might Undo at any stage in the future is currently unknown, if you figure this out, let us know in the comments.

Verify Setup

1. This tool verifies that Azure has been correctly set up. Click the “Update” button to check setup.
2. If the tool reports any missing permissions, return to Azure and ensure that all required permissions have been added to your configured application for Moodle.