An error is received when accessing Workflows link from the option on Script files in Transaction/Query Script library as
An error occurred while receiving the HTTP response to /_vti_bin/wfwebservice/externalservice.svc. This could be due to the service endpoint binding not using the HTTP protocol. This could also be due to an HTTP request context being aborted by the server (possibly due to the service shutting down). See server logs for more details.
- Browse to C:\inetpub\wwwroot\wss\VirtualDirectories\
- Open the web.config file with any text editor
- Locate the AllowAnonymousImpersonation key and set it to false as shown below:
- Perform an IISRESET