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Salesforce for Outlook (SFO) Sync Error: Missing "Don't Sync with Salesforce" Category in Outlook

Date de publication: Jun 11, 2026
Description

Salesforce for Outlook (SFO) is a desktop application that syncs contacts, calendar events, and tasks between Microsoft Outlook and Salesforce. When SFO attempts to sync items, it relies on a specific Outlook category named Don't Sync with Salesforce to identify which items to exclude from sync.
If this category is missing from the Outlook mailbox, the sync process fails and displays the following error:

Outlook is missing the category "Don't Sync with Salesforce."

This error appears when the required Outlook category does not exist in the user's mailbox, which can happen after a new Outlook profile is created, a mailbox migration, or if the category was accidentally deleted.

Résolution

To resolve this error, you must manually create the missing Outlook category so that Salesforce for Outlook can correctly identify which items to exclude from sync. Follow the steps below.

Steps to Create the Missing "Don't Sync with Salesforce" Category in Outlook

  1. Close Salesforce for Outlook from the system tray by right-clicking on the SFO icon and selecting Exit.
  2. In Outlook, click the Home tab and then click the Categorize button.
  3. Select All Categories... from the dropdown menu.
    1. Note: For calendar items, the Tags group appears on the Appointment or Meeting tab. For an open contact or task, the Tags group appears on the Contact or Task tab.
  4. Click New... on the Color Categories dialog box.
  5. Type exactly: Don't Sync with Salesforce (or Sync with Salesforce if preferred).
  6. Click the arrow next to Color and select the color you want for this category.
  7. Click OK on the Add New Category dialog box, then click OK on the Color Categories dialog box.
  8. Close and reopen Outlook, then relaunch Salesforce for Outlook and attempt the sync again.
Ressources supplémentaires

AIAUDIT2026

Numéro d’article de la base de connaissances

000386074

 
Chargement
Salesforce Help | Article