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
Symptoms
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
Cause
This error occurs if you have modified an assembly included in this solution but the version of the solution was not incremented.
Examples:
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.
Resolution
Increase the version of the solution and try the import again.
More information
For more information, see the following articles: