SharePoint 2013: No Excel Calculation Services is available in the farm

Problem

You perform a routine check of web front end server event logs and see the following application event:

Log Name:      Application
Source:        Microsoft-SharePoint Products-Excel Services Application
Date:          [date/time]
Event ID:      5234
Task Category: Web Front End
Level:         Error
Keywords:      
User:          NT AUTHORITY\IUSR
Computer:      WFE1
Description:
No Excel Calculation Services is available in the farm.
Event Xml:
...

Troubleshooting

1. Researched online; found posting suggesting that Excel Calculation Services was not started.
2. Checked this service on all servers (2 WFE, 1 APP): not started on any server.
3. Started service on APP server.  Then monitored application event logs on all farm servers for this event.

Solution

1. Verify that the Excel Calculation Services service is started.

References

• TechNet SharePoint Forums
• OWA and Excel Services