Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property.

by XDK 2. July 2013 20:12

Explanation:

  • The Work item with large amount of data in the custom HTML fields fails to open after migration.
  • The error may occur for the build logs with large amount of data as well.

Workaround:

Try to modify web.config in \Program Files\Microsoft Team Foundation Server 11.0\Application Tier\Web Services to adjust the size.
The default length is 20MB, so try a larger value than that. The value below is for 50MB. Experimentation may be necessary to find the best value.

<appSettings>
<add key="maxJsonLength" value="52428800" />
</appSettings>

Value is specified in byte

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Azure DevOps on-premises | TFS 2010

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My name is Xavier Dilip Kumar Jayaraj having 16+ years of IT experience which includes solid experience and depth Knowledge in Application Life Cycle Management, Configuration Management, Implementation and Support using TFS on-premises and Azure DevOps. I have invested in gaining DevOps knowledege to expertise with Cloud Computing providers namely Microsoft Azure and Amazon Web Services in recent years. I am very positive to learn and adapt emerging technologies to client’s environment.

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The information provided here is based on my expreriences, troubleshooting and online/offline findings. It can be used as is on your own risk without any warranties and I impose no rights.