Azure Functions
An Azure service that provides an event-driven serverless compute platform.
Timer trigger function stopped running between 12:30 AM and 1:30 PM today without any reason
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Pranab Nath
0
Reputation points
func-gen-route-est-mileage-ev-prod function app stopped running after 12:00AM on 3rd Dec. untill it was redeployed. Need a technical explanation of this problem. It is a production function app and such issues raise question on Azure service reliability.
Azure Functions
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Pravallika KV 2,690 Reputation points Microsoft External Staff Moderator2025-12-03T21:12:54.67+00:00 Hi Pranab Nath,
Thanks for reaching out to Microsoft Q&A.
We will investigate the issue and update you with the findings. Thank you for your patience as we look into this.
Update:
Upon investigating further, found that the Function App runtime encountered the below exceptions:
- No job functions found. Try making your job classes and methods public. If you're using binding extensions (e.g. Azure Storage, ServiceBus, Timers, etc.) make sure you've called the registration method for the extension(s) in your startup code (e.g. builder.AddAzureStorage(), builder.AddServiceBus(), builder.AddTimers(), etc.).
- Your app is using a deprecated version - 2.35.0 of extension bundles. Upgrade to a supported version: https://aka.ms/FunctionsBundlesUpgrade
And also, the function app failed to acquire Singleton lock for 3 times.
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Pravallika KV 2,690 Reputation points Microsoft External Staff Moderator
2025-12-04T19:25:30.1566667+00:00 Hi Pranab Nath, following up to see if you had a chance to check the above response and if it was helpful. Please do let me know if you have any further queries.
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