Learn how to fix the Azure DevOps Error MSB3644. Our DevOps Support team is here to help you with your questions and concerns.

How to Fix Azure DevOps Error MSB3644

If you have been running into trouble with Error MSB3644 during the Azure DevOps build process, our Experts have your back.

For example:

MSB3644: The reference assemblies for ‘FrameworkVersion’ were not found

In this case, we have to install the Developer Pack for the specified .NET Framework version on the build agent.

In this case, you would need to install the Developer Pack for the specified .NET Framework version on the build agent.

This error indicates a missing .NET Framework reference assembly. In other words, the build agent cannot find the needed components to compile our project. Let’s take a look at some of the common causes and solutions for this error.

Common Causes of Error MSB3644

• Maybe the project targets a .NET Framework version that isn’t installed or available on the build agent.
• The required Developer Pack or Targeting Pack for the specified .NET Framework version is absent.
• The build agent’s environment might be misconfigured or corrupted.
• There may be inconsistencies or errors in the project file related to the targeted framework.

Solutions for Error MSB3644

1. To begin with, make sure the target framework version is correct in the project properties.
2. Also, verify the corresponding .NET Framework is installed on the build agent. If necessary, install the Developer Pack or Targeting Pack for the specific version.
3. Furthermore, make sure the build agent has the latest updates and patches applied.
4. We can also consider using a newer build agent image if available, which may already include the necessary .NET Framework versions.
5. Additionally, look for any typos or incorrect framework references in the project file.
6. We need to make sure the TargetFramework` or `TargetFrameworkVersion` property is set correctly in the project file.
7. Use the `Microsoft.NETFramework.ReferenceAssemblies` NuGet package to include the required reference assemblies in our project.
8. If we are using a custom build agent, make sure that environment variables and paths are set correctly.
9. Also, look for any conflicting software or configurations that might interfere with the build process.

By following the above tips, we can troubleshoot and resolve Error MSB3644 in our Azure DevOps build process.

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Conclusion

In brief, our Support Experts demonstrated how to fix the Azure DevOps Error MSB3644.