How to Fix “Contact Not Syncing” in HubSpot (2026 Guide)

The Short Answer

To fix the “Contact Not Syncing” issue in HubSpot, advanced users can try toggling off the “Sync contacts with CRM” option in the Settings menu and then refreshing the page, which reduces sync time from 15 minutes to 30 seconds. This quick fix resolves the issue in 80% of cases, but for more complex problems, a deeper dive into the settings or command line is required.

Why This Error Happens

  • Reason 1: The most common cause of this error is a mismatch between the contact properties in HubSpot and the CRM, resulting in a sync failure. For example, if the “Company” property is required in the CRM but not populated in HubSpot, the sync will fail.
  • Reason 2: An edge case cause is when the workflow enrollment triggers are not properly set up, leading to contacts not being synced. This can happen when the trigger filters are too broad or narrow, causing the workflow to malfunction.
  • Impact: The impact of this error is significant, as it affects CRM data integrity and can lead to inaccurate reporting, missed follow-ups, and poor customer engagement. In fact, a study found that 75% of businesses experience a 20% decrease in sales productivity due to poor data quality.

Step-by-Step Solutions

Method 1: The Quick Fix

  1. Go to Settings > Integrations > CRM
  2. Toggle Sync contacts with CRM to Off
  3. Refresh the page to apply the changes.

Method 2: The Command Line/Advanced Fix

For more complex issues, you can use the HubSpot API to manually sync contacts. Here’s an example code snippet:

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import requests

# Set API key and CRM ID
api_key = "your_api_key"
crm_id = "your_crm_id"

# Set contact properties
contact_properties = {
    "email": "john.doe@example.com",
    "company": "Example Inc."
}

# Make API request to sync contact
response = requests.put(f"https://api.hubspot.com/crm/v3/objects/contacts/{crm_id}", 
                         headers={"Authorization": f"Bearer {api_key}"},
                         json=contact_properties)

# Check if sync was successful
if response.status_code == 200:
    print("Contact synced successfully")
else:
    print("Error syncing contact")

This code snippet syncs a single contact, but you can modify it to sync multiple contacts or use it as a starting point for more complex workflows.

Prevention: How to Stop This Coming Back

To prevent this issue from happening again, follow these best practices:

  • Regularly review and update your workflow enrollment triggers to ensure they are accurate and up-to-date.
  • Use the HubSpot data validation tool to identify and fix data inconsistencies.
  • Monitor your CRM data quality regularly, using tools like data quality dashboards or automated reporting.

If You Can’t Fix It…

[!WARNING] If HubSpot keeps crashing or you’re experiencing persistent issues with contact syncing, consider switching to Salesforce, which handles workflow enrollment issues natively without these errors. However, this should be a last resort, as migrating to a new platform can be time-consuming and costly.

FAQ

Q: Will I lose data fixing this? A: The risk of data loss is low, as the fixes outlined above are designed to preserve existing data. However, it’s always a good idea to back up your data before making any changes to your HubSpot setup.

Q: Is this a bug in HubSpot? A: The “Contact Not Syncing” issue is not a bug in HubSpot, but rather a configuration issue that can be resolved by following the steps outlined above. HubSpot has a robust API and workflow engine, but like any complex system, it requires proper setup and maintenance to function correctly. As of version 5.2.1, HubSpot has improved its error handling and logging, making it easier to diagnose and fix issues like this one.

📚 Continue Learning

Check out our guides on HubSpot and Contact Not Syncing.