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title: Why does Salesforce for Outlook (Retiring) create duplicate records in Microsoft® Outlook®?
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version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/sales/264-0-0/faq_sfo_duplicate_records.md
canonical_url: https://help.salesforce.com/s/articleView?id=sales.faq_sfo_duplicate_records.htm&release=264.0.0&type=5
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description: If you either mark items as Private or assign them to the Outlook category Don’t Sync with Salesforce, and you sync contacts, events, and tasks from Salesforce to Outlook, Salesforce for Outlook can create duplicate records in Outlook.
products:
  - Sales Cloud
  - Cross Cloud
  - Service Cloud Voice
release: "264"
---
# Why does Salesforce for Outlook (Retiring) create duplicate records in Microsoft® Outlook®?

If you either mark items as Private or assign them to the Outlook category Don’t Sync with Salesforce, and you sync contacts, events, and tasks from Salesforce to Outlook, Salesforce for Outlook can create duplicate records in Outlook.

![Important](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-sales-sales_productivity-264-0-0-production-enus/b2f6c36a-fa61-4a3c-9752-032ce1818a69/images/icon_important.png)

Important Full product retirement for Salesforce for Outlook is scheduled on January 30, 2027. See [Salesforce for Outlook Retirement](https://help.salesforce.com/s/articleView?id=000393445&type=1&mode=1&language=en_US). To keep integrating Microsoft Outlook with Salesforce, check out our next-generation products: the Outlook integration and Einstein Activity Capture. See [Move from Salesforce for Outlook (Retiring) to the Next-Generation Products](https://help.salesforce.com/articleView?id=outlookcrm_sfo_move_parent.htm&language=en_US).

Duplicate records can be created if you have Salesforce items that contain the same information as the Outlook items you either marked as Private or assigned to the category _Don't Sync with Salesforce_. These items were never mapped to each other, so Salesforce for Outlook treats them separately, resulting in duplicates.

If you want to remove duplicates, it's best to remove the ones in Outlook that you either marked as Private or assigned to the Outlook category _Don't Sync with Salesforce_. Removing the duplicates in Outlook ensures that you don't delete information in Salesforce to which other users have contributed.

#### See Also

- [Syncing Between Salesforce for Outlook (Retiring) and Microsoft® Outlook®](https://help.salesforce.com/s/articleView?id=sales.outlookcrm_sync.htm&release=264.0.0&type=5 "Stop duplicating your contacts, events, and tasks in Outlook and Salesforce and start syncing between the two systems with Salesforce for Outlook.")