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Editorial Team
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Asked: 2026-05-15T05:08:51+00:00

For the Build Process in TFS 2010 I’ve created a library containing some custom

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For the Build Process in TFS 2010 I’ve created a library containing some custom code activities.
In the past it all worked fine by adding the library (*.dll) to Source Control and setting the ‘Build Controller – Version Control Path to Custom Assemblies’ to the path where the library could be found in Source Control.

But since a few days (and I’ve been updating the library often) the build doesn’t succeed anymore.
The error reported is:

TF215097: An error occurred while
initializing a build for build
definition “Cannot create unknown
type ‘{clr-namespace:BuildTasks;assembly=BuildTasks}'”

After searching I couldn’t find any other solution than installing the library to the GAC. That works but I wonder why it is impossible to get it to work without having to install in to the GAC.

So although it working again now, I’d like to get it back to work the old way, without GAC. Hopefully some of you can help me. Thanks in advance.

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1 Answer

  1. Editorial Team

    Since no answer is given and I haven’t found any fix, I decided to put in the GAC now.
    That works as well. 🙂

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