topic Re: EventStream - SQL Server on VM DB (CDC) in Fabric platform

EventStream - SQL Server on VM DB (CDC)

Karthikpv — Mon, 28 Jul 2025 05:26:43 GMT

I am facing this issue while trying to connect to a SQL server on EventStream,
Error:

Property 'username's value '' is invalid.
What's the solution?

Re: EventStream - SQL Server on VM DB (CDC)

burakkaragoz — Mon, 28 Jul 2025 06:26:48 GMT

Ah, this is a classic "empty field" error. You're probably leaving the username box blank when setting up the EventStream connection.

What's likely happening: EventStream is expecting SQL Server authentication (username/password), but you've left the username field empty. It won't accept Windows authentication for CDC connections.

Quick fix:

Create a proper SQL login on your SQL Server instance
Use that login's username (not a Windows domain account)
Make sure the login has db_owner permissions on the database

CDC-specific gotchas: Your SQL user needs special permissions because CDC is picky. The account needs to read change data, and that requires elevated permissions. Also, make sure:

CDC is actually enabled on your database AND the specific tables
SQL Server Agent is running (CDC breaks without it)
Your SQL Server allows mixed authentication mode

If you're still stuck: Try connecting with SQL Server Management Studio first using the same credentials. If that works but EventStream doesn't, it's probably a permissions issue rather than a connection problem.

What type of authentication were you trying to use? And have you verified CDC is properly set up on the SQL Server side?

If my response resolved your query, kindly mark it as the Accepted Solution to assist others. Additionally, I would be grateful for a 'Kudos' if you found my response helpful.
This response was assisted by AI for translation and formatting purposes.

Re: EventStream - SQL Server on VM DB (CDC)

Karthikpv — Mon, 28 Jul 2025 10:20:16 GMT

Hi burakkaragoz

I have created a login on SQL server and tested it in SSMS. Also i have given the db_owner permission to the login , enabled mixed authentication , have enabled CDC for the db and the tables and verified it , the connections and gateway are online , still i am facing this issue

Re: EventStream - SQL Server on VM DB (CDC)

burakkaragoz — Mon, 28 Jul 2025 13:37:35 GMT

Karthikpv ,

Hmm, that's weird if you've got the SQL login working in SSMS but EventStream is still complaining about an empty username.

A few things to double-check:

In the EventStream connection setup:

Are you definitely typing the username in the right field? Sometimes there are multiple auth sections
Try the username without any domain prefix (just sqluser, not domain\sqluser)
Make sure there are no trailing spaces in the username field

Gateway-related issues: Since you mentioned the gateway is online, this might be a gateway configuration problem:

Is the gateway service running under an account that can reach your SQL Server?
Try testing the connection directly on the gateway machine
Check if there are any firewall rules blocking the gateway from reaching SQL Server

EventStream-specific quirks:

What's the exact format you're using for the server name? Try both servername\instance and servername,port formats
Is your SQL Server instance named or default? Named instances can be tricky with EventStream

Debug step: Try creating a simple data flow (not EventStream) to the same SQL Server first. If that works, then it's definitely an EventStream-specific issue.

Can you share the exact server name format you're using and whether it's a named instance? That might help narrow down the issue.

This response was assisted by AI for translation and formatting purposes.

Re: EventStream - SQL Server on VM DB (CDC)

Anonymous — Thu, 31 Jul 2025 07:17:34 GMT

Hi Karthikpv,

Thanks for reaching out to the Microsoft fabric community forum.

Since you've already went through the steps provided by burakkaragoz and also verified the SQL login works in SSMS and CDC is properly configured.

If none of the above help, at this point it may be worth opening a support ticket with Microsoft. You can reach out to Microsoft Support by raising a ticket with Microsoft Support.

Please refer below link on how to raise a contact support or support ticket.
How to create a Fabric and Power BI Support ticket - Power BI | Microsoft Learn

I would also take a moment to thank burakkaragoz, for actively participating in the community forum and for the solutions you’ve been sharing in the community forum. Your contributions make a real difference.

If I misunderstand your needs or you still have problems on it, please feel free to let us know.

Best Regards,
Hammad.

Re: EventStream - SQL Server on VM DB (CDC)

Anonymous — Sun, 03 Aug 2025 18:28:09 GMT

Hi Karthikpv,

I wanted to follow up on our previous conversation. Has your issue been resolved or were you able to raise a support ticket with Microsoft Fabric Support?

Your feedback would be greatly appreciated, as it can help us better understand and address similar issues in the community.

Thank you.