What causes Fabric Pipeline Error 2108?

The target endpoint URL is incorrect, malformed, or has changed since the pipeline was configured. Authentication credentials or tokens used to call the endpoint are expired or invalid. The external service returned a non-success HTTP status code (e.g., 401, 403, 404, 500). Network or firewall rules are blocking outbound calls from Fabric to the target endpoint

How do I fix Fabric Pipeline Error 2108?

Step 1: Copy the endpoint URL from the error message and test it directly using a REST client (such as Postman or Fiddler) to confirm the service is reachable and returning a valid response.. Step 2: Check the authentication method configured in the pipeline's Web or HTTP activity and verify that tokens, keys, or credentials are current and correctly formatted.. Step 3: Review the HTTP response code included in the error message — a 401/403 indicates an auth issue, a 404 suggests a wrong URL, and a 5xx points to a server-side problem on the target service.. Step 4: If a network boundary is involved, confirm that the Fabric service IPs or a configured Integration Runtime can reach the endpoint without being blocked by firewalls or NSGs.. Step 5: Enable pipeline diagnostic logging and capture the full request/response to identify exactly where the call is failing, then update the activity configuration accordingly.

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Power BI Refresh Error:
Fabric Pipeline Error 2108

What does this error mean?

Error 2108 is raised when a Fabric pipeline activity calls an external endpoint and receives an unexpected or error HTTP response. This typically indicates a misconfigured URL, authentication problem, or an issue on the target service side.

Common causes

1The target endpoint URL is incorrect, malformed, or has changed since the pipeline was configured
2Authentication credentials or tokens used to call the endpoint are expired or invalid
3The external service returned a non-success HTTP status code (e.g., 401, 403, 404, 500)
4Network or firewall rules are blocking outbound calls from Fabric to the target endpoint

How to fix it

1Step 1: Copy the endpoint URL from the error message and test it directly using a REST client (such as Postman or Fiddler) to confirm the service is reachable and returning a valid response.
2Step 2: Check the authentication method configured in the pipeline's Web or HTTP activity and verify that tokens, keys, or credentials are current and correctly formatted.
3Step 3: Review the HTTP response code included in the error message — a 401/403 indicates an auth issue, a 404 suggests a wrong URL, and a 5xx points to a server-side problem on the target service.
4Step 4: If a network boundary is involved, confirm that the Fabric service IPs or a configured Integration Runtime can reach the endpoint without being blocked by firewalls or NSGs.
5Step 5: Enable pipeline diagnostic logging and capture the full request/response to identify exactly where the call is failing, then update the activity configuration accordingly.

Frequently asked questions

How do I find the actual HTTP status code returned in Error 2108?

The full error message in the Fabric pipeline run output includes the response body from the endpoint call. Expand the activity output in the pipeline monitoring view or check the diagnostic logs to see the HTTP status code and response content.

Can a firewall on the external service cause Error 2108?

Yes. If the target endpoint's firewall does not allowlist Fabric's outbound IP ranges, the connection may be refused or return an unexpected response. Add Fabric's service IPs or use a self-hosted Integration Runtime with a known IP to resolve this.