Hi KM-04061148-0,
Great that you have already ruled out the obvious checks! The key thing to understand here is that on-premises data gateways are scoped per environment in Power Platform.
Even though you are the gateway owner and it shows in the company environment, each Power Platform environment maintains its own list of available gateways. A gateway is only visible in an environment if it has been made available there.
Most likely causes:
1. Gateway not associated with the DEV environment - Gateways are managed per environment in the Power Platform admin center. The gateway being visible in the company environment does not automatically make it available in the DEV environment.
2. Environment type restriction - Developer environments have certain restrictions. Verify whether the gateway has been explicitly made available in the DEV environment.
3. DLP policies - A Data Loss Prevention policy applied to the DEV environment may block the SQL Server connector. Check Power Platform admin center > Data policies for the DEV environment.
Steps to resolve:
1. Go to Power Platform admin center > Data (preview) > On-premises data gateways
2. Find your gateway and open its Settings
3. Check the Environment field to see which environments the gateway is associated with
4. If the DEV environment is not listed, a Power Platform admin will need to make the gateway available in that environment
References:
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