Synchronizing User Accounts with Microsoft 365 (Modern Authentication)

https://help.mailstore.com/en/server/Synchronizing_User_Accounts_with_Microsoft_365_(Modern_Authentication) 

https://help.mailstore.com/en/server/Office_365_Integration#Accessing_Directory_Service_Integration


If synchronization fails due to:

Requesting Microsoft Graph API token failed: AADSTS70002: Error validating credentials. AADSTS50012: Invalid client secret is provided.


Refer to this link:

https://cs.mailstore.com/index.php?/Knowledgebase/Article/View/172/4/user-synchronization-with-office-365-fails-suddenly