Power Platform Community Forum Thread Details

Hello,

I am facing an issue when deploying a custom workflow activity in Visual Studio 2019 for Dynamics 365. The deployment fails for no apparent reason, even though everything was working fine before.

The error when I try to deploy after generation of the solution is : Unable to find requested plugin to deploy PowerPlatform.Workflows.Wkf_.YYYY in . Will check all registered assemblies/projects. Please Note: Plugin name and identity are contructed from RootNamespace.ClassName.cs;

I haven't made any recent changes to my project, but the deployment doesn't seem to be working anymore.

I am using Visual Studio 2019 and .NET Framework 4.6.2.

If anyone has encountered this issue or has a solution, I would greatly appreciate your help!

Thank you!

Categories:

Power Apps Pro Dev & ISV

This error usually occurs due to one of the following reasons when deploying a custom workflow activity in Dynamics 365:

Possible Causes and Solutions

1. Incorrect Root Namespace or Class Name

The error message suggests that the system is looking for PowerPlatform.Workflows.Wkf_.YYYY, but it can't find it.
Dynamics 365 constructs the plugin name based on RootNamespace.ClassName.
Fix:
- Verify your namespace and class name in the .cs file where you define your custom workflow activity.
- Open your .cs file and ensure that the namespace matches your project's root namespace.
- Check Properties > Default Namespace in your Visual Studio project to confirm it matches the one used in the code.

2. Incorrect Assembly Name in Plugin Registration Tool

If the name in the Plugin Registration Tool does not match your assembly, the system cannot find it.
Fix:
- Open the Plugin Registration Tool.
- Check the name of your existing assembly under "Registered Assemblies".
- Ensure your class name and namespace match the one used in the tool.

3. Build Configuration Issues

Sometimes Visual Studio doesn’t properly compile the plugin before deployment.
Fix:
- Clean and Rebuild the Solution:
  1. Go to Build > Clean Solution.
  2. Then Build > Rebuild Solution.
- Ensure the correct configuration is selected:
  - Set Target Framework to .NET 4.6.2 in Project Properties > Application.
  - Use the Release build configuration, as Debug builds might cause issues.

4. Missing Dependencies or Incorrect References

If your project is missing required references, the deployment might fail.
Fix:
- Ensure you have the following references added:
  - Microsoft.Xrm.Sdk
  - System.ServiceModel
  - System.Runtime.Serialization
- Right-click your project → Manage NuGet Packages → Update all dependencies.

5. Deployment Issue with Plugin Registration Tool

If your assembly was previously registered and you’re deploying an update, there could be a mismatch.
Fix:
- In Plugin Registration Tool, unregister the previous version of the plugin and try redeploying it.

6. Check the Power Platform Tools in Visual Studio

If you are using Power Platform Tools for Visual Studio, make sure they are up to date.
Fix:
- Go to Extensions > Manage Extensions.
- Search for Power Platform Tools and update if available.

7. Use the Output Log for More Details

Open View > Output in Visual Studio and select CRM Plugin Deployer or Build to check for more specific errors.

Final Steps

Try these steps in order:

Verify your namespace and class name (should match exactly).
Clean and rebuild the solution in Release mode.
Ensure all dependencies are correctly referenced.
Manually remove and re-register the plugin using the Plugin Registration Tool.
Update Power Platform Tools in Visual Studio if outdated.