Microsoft Graph is stop working after i disable login of the account

Microsoft Graph is stop working after i disable login of the account

Microsoft Graph is stop working after i disable login of the account.
after re-enable the account , the mail is failed to work.
the error "Mailbox is not accessible : "Check authorization details and try again". In the meantime, mails will not be fetched in the mail fetching schedule."
i re-created new client secret , but stil unable to start featching with error Access Token not found.
Please save and sign in to get the required tokens.

Can anyone advise ?

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