Error: External component has thrown an exception

Error Message

ArcGIS Workflow Manager is a time-saving extension of ArcGIS for Desktop that enables users to map the inventory processes by providing a centralized enterprise job management and tracking system to streamline daily tasks across organizations.

When attempting to create a job in ArcGIS Workflow Manager, the following error is returned:

“External component has thrown an exception.”


The following are possible causes of this issue:

  • The recipient list for the newly created job notification contains tokens.   
  • The computer is not whitelisted for access to the Simple Mail Transfer Protocol (SMTP) server.

Solution or Workaround

To resolve this issue, refer to the relevant solutions below.

Related Information

ArcGIS Web Help: Workflow Manager system settings
ArcGIS Web Help: Tokens