InvalidPluginAssemblyContent error when importing a solution in Microsoft Dynamics 365
This article provides a resolution for the issue that you may receive the InvalidPluginAssemblyContent error when importing a solution in Microsoft Dynamics 365.
Applies to: Microsoft Dynamics 365 Customer Engagement Online
Original KB number: 4500635
When attempting to import a solution in Microsoft Dynamics 365, the solution import fails with the following error:
Plug-in assembly does not contain the required types or assembly content cannot be updated.
Error code: 8004418b
This error occurs if you have modified an assembly included in this solution but the version of the solution was not incremented.
Changing the name, version, isolation level, public key token, or culture of the assembly without increasing the version of the solution will cause this error. Changes like these require a solution upgrade (version change) instead of a solution update.
Increase the version of the solution and try the import again.
For more information, see the following articles: