Issue: When using the Sign Document Workflow action to sign a document in Core-based Workflow, an error is displayed stating, “The system cannot find the file specified.”
Resolution: This issue occurs because the user profile hive for the distinguished account is not loaded in the HKEY_USERS branch of the registry when the application pool on the OnBase Application Server is running. To resolve this issue, the user profile for the application pool identity must be loaded in the HKEY_USERS branch of the registry. Doing so ensures that certificates and private keys are accessible when signing documents.