Applies to Product -Dynamics 365 Lifecycle Services
What’s happening?
The customer is experiencing a build failure with the error message: "Serialization version mismatch detect, make sure the runtime dlls are in sync with the deployed metadata. Version of file '209'. Version of dll '208'." This issue is critical as it prevents the deployment of packages to the production environment.
Reason:
The underlying cause of this is a version mismatch between the runtime DLLs and the deployed metadata, which leads to the serialization version mismatch error during build creation and database synchronization.
Resolution:
- Verify that the versions of the runtime DLLs are aligned with the deployed metadata. Ensure that the version of the file matches the version of the DLL.
- If using a cloud-hosted build machine, confirm that the build machine is configured correctly and that all necessary updates have been applied.
- For further assistance, consider scheduling a call with a support engineer to discuss the issue in detail and expedite the resolution process.
- If the problem persists, refer to the public documentation on build automation that uses Microsoft-hosted agents and Azure Pipelines for additional guidance.