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Use the settings on this page to determine how data is synchronized between Dynamics 365 and Microsoft Dynamics 365 for Outlook. For example, you can control synchronization between pairs of fields or enable or disable synchronization of additional mailing addresses, assigned tasks, or appointment attachments.

Important

The Synchronization tab was introduced in Microsoft Dynamics CRM Online 2015 Update and Microsoft Dynamics 365 (on-premises).

Open the System Settings dialog box (if it’s not already open)

  1. Make sure that you have the System Administrator or System Customizer security role or equivalent permissions.

    Check your security role
    • Follow the steps in View your user profile.

    • Don’t have the correct permissions? Contact your system administrator.

  2. Go to Settings > Administration.

  3. Choose the System Settings > Synchronization tab.

Settings Description
Synchronize Dynamics 365 items with Outlook or Exchange
Manage system filters for your entire organization to determine the Dynamics 365 records that are synchronized to Outlook or Exchange folders. This setting provides access to the User Filters tab in the Synchronization Settings for Outlook or Exchange dialog box. You may want to view this tab to see the default online synchronization filter settings for users in your organization. More information: Choose the records to synchronize between Dynamics 365 and Outlook or Exchange
Manage the synchronized fields of Outlook or Exchange items including appointments, contacts, and tasks for your entire organization. This setting provides access to the Synchronization Fields tab in the Synchronization Settings for Outlook or Exchange dialog box. Use this tab to view how appointments, contacts, and tasks fields are mapped between Dynamics 365 and Outlook, and to change the synchronization direction or restrict synchronization for contacts and tasks fields. For example, if you want the contents of the contacts Notes field to be private, you can keep that field from synchronizing. More information: Control field synchronization with Outlook
Manage your offline filters and take your information offline in Dynamics 365 for Outlook
Manage system offline filters for your entire organization to determine what Dynamics 365 data users can take with them when they go offline in Dynamics 365 for Outlook. This setting provides access to the User Filters tab in the Go Offline Settings dialog box. You may want to view this tab to see the default offline synchronization filter settings for users in your organization. More information: Choose records to work with offline in Dynamics 365 for Outlook
Configure general synchronization rules for your entire organization for appointments, contacts, and tasks
Appointments
Synchronize appointment attachments with Outlook or Exchange Attachments take up database space, so synchronization of appointment attachments is turned off by default. Choose the check box to turn on synchronization of attachments. Important: Synchronization of appointment attachments is not supported for recurring appointments or service activities. 

More information: Track Outlook appointments in Dynamics 365 for Outlook
Contacts
Synchronize mailing address only in Outlook contact

Synchronize all three addresses (Business, Home, Other) in Outlook contact
By default, just one Outlook mailing address field is synchronized between Dynamics 365 and Outlook. This is sufficient for most organizations. If you want to synchronize all three Outlook mailing address fields (Business, Home, and Other fields) choose the Synchronize all three addresses in Outlook contact option. Warning: Be cautious when enabling this option as it can cause data loss in some situations if you have existing data. This is due to the remapping of the attributes for existing tracked contacts. The best practice is to do in-house testing to understand how the re-mapping affects your environment and data. In most cases, you should have the full data in one side (normally in Dynamics 365) and sync to the other side (normally Outlook or Exchange).
Tasks
Synchronize tasks that are assigned in Outlook Outlook tasks are synchronized by default, but synchronization of assigned tasks is turned off by default. Most companies don’t require this feature because tasks would usually be assigned directly in Dynamics 365 by changing ownership in Dynamics 365.

You may want to enable this feature, however, if your company’s business processes involve creating and sending tasks in Outlook instead of Dynamics 365. More information: Track Outlook tasks in Dynamics 365 for Outlook