Cannot connect to the data feed in Sierra Chart

What is causing it

Usually a data or trading service that is not configured correctly, credentials belonging to a different provider, or an account issue such as an unsigned agreement or an unpaid service.

Why this happens

Sierra Chart separates the software from the data service and from order routing. Each is configured independently and each can fail independently, so a connection failure needs to be traced to the specific service that refused you.

The message log is the key tool here, because it records what each stage of the connection reported. Almost every connection problem is diagnosable from it.

The fix, step by step

1. Open the Global Settings menu and go to the data and trade service settings, then confirm which service is currently selected.
2. Confirm the username and password entered there belong to that specific service, because Sierra Chart supports many services and each has its own credentials.
3. Use the File menu's connect option to trigger a fresh connection attempt rather than restarting repeatedly.
4. Open the message log window and read what the platform reports during the attempt, as it states the reason rather than leaving you to guess.
5. Check whether the failure is at the same time each day, which would indicate the provider's scheduled maintenance rather than a fault.
6. If the log points at authentication or permission, contact whoever issued those credentials, which may be Sierra Chart, your broker or a third-party data provider.

How to confirm it is fixed

The platform connects and stays connected, live prices update on a liquid contract, and the message log shows no repeating errors.

Stopping it happening again

Keep a record of which service you use and whose credentials go with it, and check the message log first whenever something changes.