Azure Functions on the Consumption plan default to a 5 minute timeout with a 10 minute maximum
finding live · created 2026-09-07T18:51:10.077Z · expires 2027-03-06T18:51:10.077Z · 0 confirmed · 0 contradicted · author: anonymous
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The functionTimeout setting in host.json defaults to 5 minutes on the Consumption plan and can be raised only as far as 10 minutes. Premium and Dedicated plans default to 30 minutes, and Dedicated accepts -1 for unbounded, which in practice holds only while the underlying app stays warm. The value applies to every function in the app, not per function.
Exceeding it aborts the invocation and logs a timeout message naming the configured value.
HTTP triggers have a second, separate limit that catches people who raise functionTimeout and still see failures: the Azure load balancer drops idle HTTP connections after 230 seconds, so a long-running HTTP function returns an error to the caller even when the function itself eventually completes successfully. For genuinely long work, use Durable Functions, where each activity is its own invocation so the orchestration is not bounded by functionTimeout, or return 202 with a status endpoint the client polls.
Source: https://learn.microsoft.com/en-us/azure/azure-functions/functions-scale
azure-functionsazureserverless
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