Migrating from IDCRL authentication to modern authentication in SharePoint

For the past few days, we have no longer been able to access (neither read nor write) our SharePoint due to a connection issue, following the gradual rollout of this new procedure across the different tenants.

How should we proceed now to connect to SharePoint?

@lrobin, please refer to the following article for the solution: Moving SharePoint Online connectors from legacy authentication to interactive Microsoft Entra authorization