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Dynamics 365 Community / Forums / Microsoft Dynamics CRM (Archived) / Error Registering Work...
Microsoft Dynamics CRM (Archived)

Error Registering Workflow Activity

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Posted on by Tadhg 75

I am getting a strange error when using the Plugin Registration tool to register an assembly.

The error code is "<ErrorCode>-2147204725</ErrorCode>"
Included in the Error details is the following:

"This plugin assembly uses version MyActivity, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c1fbfa80b3681ec0 of the .NET Framework. At this time Microsoft Dynamics 365 requires version 4.6.2 of the .NET Framework for plugin assemblies. Rebuild this assembly using .NET Framework version 4.6.2 and try again."

It appears to be stating my Activitiy's details as the .NET version?

Additional Info:

- The .NET Version IS 4.6.2
- I have tried building using .NET 4.7
- The assembly is signed.
- I am system admin

Has anyone seen this error before? I can't find any info anywhere, and am at a loss as to how I can troubleshoot this further.

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I have the same question (0)
  • Verified answer
    unizap Profile Picture
    unizap on at

    Hi,

    Please check this post

    community.dynamics.com/.../at-this-time-microsoft-dynamics-365-requires-version-4-6-2-of-the-net-framework-for-plugin-assemblies

    Accordingly, can you change the target version as 4.5.2 & check?

  • Tadhg Profile Picture
    Tadhg 75 on at

    This worked!

    Thank you so much.

    I still don't understand why this occurred.

    It seems to have been specific to this Dynamics instance. As I was able to register the same assembly on other instances without issue.

    I was also unable to register a (practically) blank assembly on the instance with the issue.

    Thanks again.

  • unizap Profile Picture
    unizap on at

    As pointed out by Alex in the post that I shared, this seems to be a bug with the error message. It should say the following (only when assembly version is higher than 4.5.2):

    "At this time Microsoft Dynamics 365 requires version <4.5.2> of the .NET Framework for plugin assemblies. Rebuild this assembly using .NET Framework version <4.5.2> and try again."

    Version 4.5.2 is the highest supported version.

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