Database API Builder (DAB) Stopped working with SWA

Question

Database API Builder (DAB) Stopped working with SWA

Eric B 0

Database API Builder (DAB) stopped working across two of my SWA instances. Is it working or is it something on my side.

I get error 500 sometimes other times I get error 400 Bad Request

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Answer 1

Suwarna S Kale 3,391

Hello Eric B,

Thank you for posting your question in the Microsoft Q&A forum.

The intermittent 500 and 400 errors in your Database API Builder (DAB) across multiple Static Web Apps (SWA) instances suggest either a service disruption or configuration issue. First, check Azure Status for any ongoing incidents with DAB or dependent services.

Key troubleshooting steps:

Verify your connection strings and database permissions haven't expired or changed
Review recent deployment logs for schema changes that might conflict with DAB
Test with a minimal API endpoint to isolate whether the issue affects all endpoints

If basic checks show no problems, redeploy your DAB configuration and enable detailed logging to capture the root cause. The mixed error codes often indicate either authentication problems (400) or backend processing failures (500).

If the above answer helped, please do not forget to "Accept Answer" as this may help other community members to refer the info if facing a similar issue. Your contribution to the Microsoft Q&A community is highly appreciated.

Laxman Reddy Revuri 5,400 Reputation points Microsoft External Staff Moderator

2025-06-05T04:05:51.94+00:00

Hi @Eric B
The 400 error generally suggests a bad request, possibly due to issues with your API parameters or authentication. The 500 error indicates a server-side issue likely with the connection to your backend or configuration.
Troubleshoot the usage of Data API builder for Azure databases
Laxman Reddy Revuri 5,400 Reputation points Microsoft External Staff Moderator

2025-06-09T01:05:39.6333333+00:00

Hi Eric B,
Just checking in to see if the above answer provided by Suwarna S Kale

In case if you have any resolution, please do share that same with the community as it can be helpful to others. Otherwise, will respond with more details and we will try to help.
Laxman Reddy Revuri 5,400 Reputation points Microsoft External Staff Moderator

2025-06-10T04:11:01.2333333+00:00

Hi Eric B, Just checking in to see if the above answer provided by Suwarna S Kale

In case if you have any resolution, please do share that same with the community as it can be helpful to others. Otherwise, will respond with more details and we will try to help.

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Database API Builder (DAB) Stopped working with SWA

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