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Socket Error in Function App

OV, Joel 100 Reputation points
2025-09-16T12:58:27.6033333+00:00

We are faced with an error as below on a function app that is trying to call an app. Please share your suggestions if any,

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Azure Functions
Azure Functions

An Azure service that provides an event-driven serverless compute platform.

Answer accepted by question author

Abiola Akinbade 30,490 Reputation points Volunteer Moderator
2025-09-16T13:11:13.1+00:00

Hello OV, Joel,

Thanks for your question.

This error message is usually caused by a lack of available resources. Azure Functions have concurrent connection limits. If you're making many outbound calls, you might be hitting these limits.

Can you reuse HTTP clients instead of creating new ones for each request? You can try a simply retry logic in your code

See:

https://learn.microsoft.com/en-us/answers/questions/1179940/an-operation-on-a-socket-could-not-be-performed-be

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