What causes Fabric Pipeline Error 2106?

Connection string was manually typed or partially copied, introducing syntax errors. Storage account key has been regenerated, making the existing connection string stale. Connection string is using an incorrect format for the target storage type (e.g., mixing Azure Data Lake and Blob Storage formats). Placeholder or template variables were left unreplaced in the connection string

How do I fix Fabric Pipeline Error 2106?

Step 1: Navigate to the Azure Portal and open the target Storage Account.. Step 2: Go to 'Security + networking' > 'Access keys' and copy the full connection string from either key1 or key2.. Step 3: Open the Fabric Data Factory pipeline, locate the affected linked service or connection, and replace the existing connection string with the one copied from the portal.. Step 4: Test the connection using the 'Test connection' button before saving.. Step 5: Re-run the pipeline and verify the activity succeeds.

High severityconfigurationMicrosoft Fabric →

Power BI Refresh Error:
Fabric Pipeline Error 2106

What does this error mean?

The storage connection string provided in the pipeline connection is invalid or incorrectly formatted. The pipeline cannot establish a connection to the target storage resource.

Common causes

1Connection string was manually typed or partially copied, introducing syntax errors
2Storage account key has been regenerated, making the existing connection string stale
3Connection string is using an incorrect format for the target storage type (e.g., mixing Azure Data Lake and Blob Storage formats)
4Placeholder or template variables were left unreplaced in the connection string

How to fix it

1Step 1: Navigate to the Azure Portal and open the target Storage Account.
2Step 2: Go to 'Security + networking' > 'Access keys' and copy the full connection string from either key1 or key2.
3Step 3: Open the Fabric Data Factory pipeline, locate the affected linked service or connection, and replace the existing connection string with the one copied from the portal.
4Step 4: Test the connection using the 'Test connection' button before saving.
5Step 5: Re-run the pipeline and verify the activity succeeds.

Frequently asked questions

Will rotating my storage account key cause Error 2106?

Yes. Regenerating a storage account key immediately invalidates any connection strings using the old key. You must update all affected Fabric pipeline connections with the new connection string after a key rotation.

Can I use a SAS token instead of a connection string to avoid this error?

Yes. You can configure the linked service to use a SAS URL or SAS token, which can be scoped to specific permissions and expiry times, reducing the risk of broken connections after key rotations.