Set Azure Function timeout without republishing

A while ago I needed to change an Azure Function timeout but I wanted to avoid, if possible, to republish it. After a little while searching I discovered this page which explain how to overwrite the values specified in the host.json file with the values specified from the Azure configuration.

The article states that if you specify a configuration value in the following format:


The runtime will replace the existing value of the with the one specified.

Note that the dot (.) in the setting name must be expressed as double underscore (__) when specifying the setting in the Azure configuration.

In my case I wanted to override the value of the function timeout to 1 hour so I added the following to the Azure Function configuration in the Azure portal:

AzureFunctionsJobHost__functionTimeout: 01:00:00

Hope this helps!

About the Author:

Hi, I’m Guido, a Microsoft certified developer based in Italy with expertise in Microsoft platforms such as SharePoint and Power Platform. I am specialized in SPFx development and Microsoft technologies such as .NET and .NET core.

I have extensive experience in developing custom solutions for clients across various industries. My expertise in Microsoft technologies has enabled me to deliver high-quality solutions that meet the unique needs of my clients.

In addition to my professional work, I am passionate about helping the community, particularly the PnP community. I actively contribute to open-source projects every time I can, and so I decided to share my knowledge and discoveries through blog posts with this site.


Zambarda, G. (2024). Set Azure Function timeout without republishing. Available at: [Accessed: 22nd April 2024] 

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