Workflow error: the workflow failed to start due to an internal error.

Symptoms:

A custom workflow can run normally in its own test environment, but is successfully deployed on the customer's machine. An error occurs when running the workflow: the workflow failed to start due to an internal error.
The workflow status is put back to the status before running. error information, system logs, and SharePoint logs are not found.

Solution:

It is found that the features workflow is not activated by default for the site created by the assisted template. You only need to activate the features workflow of the website set and the features of the released site.
In addition, you sometimes need to reload the WF
Lodctr c: \ windows \ microsoft. Net \ framework \ V3.0 \ Windows Workflow Foundation \ perfcounters. ini