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An internal Microsoft Dynamics 365 error occurred while synchronizing appointments, contacts, and tasks

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This article provides a solution to the "UserPrivilegeError" that occurs when selecting Test & Enable Mailbox on a mailbox record in Microsoft Dynamics 365.

Applies to:   Microsoft Dynamics 365
Original KB number:   4346733

Symptoms

When you select Test & Enable Mailbox on a mailbox record in Dynamics 365, the Appointments, Contacts, and Tasks Status field shows as Failure. The following message is logged in the Alerts section:

An internal Microsoft Dynamics 365 error occurred while synchronizing appointments, contacts, and tasks for the mailbox <Mailbox Name>. The mailbox didn't synchronize. The owner of the associated email server profile <Email Server Profile Name> has been notified.
Email Server Error Code: UserPrivilegeError

Cause

The error message with the "UserPrivilegeError" email server error code indicates that the user who owns this mailbox doesn't have sufficient privileges. Refer to PrivilegeDenied error occurs when using Server-Side Synchronization for a list of required privileges.

Important

Verify that the owner of the mailbox record matches the user. For example, if the mailbox belongs to Paul Cannon, ensure that the Owner value in the record is also Paul Cannon. If it shows a different user, that user might not have access to Paul Cannon's mailbox.

Resolution

To fix this issue, follow these steps:

  1. Open the mailbox record in Dynamics 365 as a user with the "System Administrator" role.

    Tip

    The alert includes a link to the mailbox record.

  2. Verify that the Owner field in the mailbox form is populated with the user's name. If another user is listed, change it to the user's name.

  3. Select the link in the Owner field to open the user record for that owner.

  4. Select Manage Roles to see which security role(s) are assigned to this user.

  5. Navigate to Settings > Security > Security Roles.

  6. Open the roles found in step 4. See PrivilegeDenied error occurs when using Server-Side Synchronization for a list of required privileges, and then verify that the user's security role contains these privileges.

  7. After verifying that the user is the owner of the mailbox record and that their security role contains the required privileges, select Test & Enable Mailbox in the mailbox record again. If the test doesn't result in Success, review the message that appears in the Alerts section for further details.