Server Error in ‘/x’ Application – Excel Web App Error – Solution

Problem:
All of a sudden Office Web Apps Excel Web App stopped working and gave this Runtime error message on opening Microsoft Excel files from SharePoint 2013:
Server Error in ‘/x’ Application.

SharePoint Office Web Apps Server Error in '/x' Application

Solution: 

This occurs due to the public key which connects to the WOPI application such as Office Web Apps Server to the SharePoint farm goes out of sync! To resolve the issue, Run from any SharePoint Server:  
Update-SPWOPIProofKey

Salaudeen Rajack

Salaudeen Rajack is a SharePoint Architect with Two decades of SharePoint Experience. He loves sharing his knowledge and experiences with the SharePoint community, through his real-world articles!

4 thoughts on “Server Error in ‘/x’ Application – Excel Web App Error – Solution

  • October 1, 2020 at 6:27 AM

    Thanks a lot. you are a savior!

    Reply
  • October 1, 2020 at 6:26 AM

    Thank you! it resolved the issue.

    Reply
  • June 12, 2019 at 9:17 AM

    Thanks a lot.

    Reply
  • May 28, 2017 at 4:40 PM

    Thnx a lot. It helped on time!!

    Reply

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