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PowerPoint high number of queued conversion requests (Microsoft PowerPoint Web App)

Office Web Apps

Applies to: PowerPoint Web App Preview

Topic Last Modified: 2010-02-26

Alert Name:   PowerPoint high number of queued conversion requests

Event ID:   No event ID

Summary:   With Microsoft PowerPoint Web App, Microsoft SharePoint Server 2010 users view and modify their presentations by using a Web browser. When a high number of viewing conversion requests are queued, something might be wrong with the application server, or PowerPoint Web App might be unable to serve all requests from users.

Symptoms:   One or more of the following symptoms might appear:

  • Users who use PowerPoint Web App to view documents experience very poor performance.

  • Users cannot use PowerPoint Web App to view documents because they do not receive responses from the application server.

Cause:   One or more of the following might be the cause:

  • The application server is malfunctioning.

  • There are not enough PowerPoint Web App viewing worker processes.

  • There are not enough application servers in the farm.

Resolution:   Check the general availability of farm servers
  1. Check the availability of the farm servers by performing a PING command to each server and checking the response times.

Resolution:   Increase the maximum number of worker processes
  1. Verify that you meet the following minimum requirements: See Add-SPShellAdmin.

  2. On the Start menu, click All Programs.

  3. Click Microsoft SharePoint 2010 Products.

  4. Click SharePoint 2010 Management Shell.

  5. At the Windows PowerShell command prompt, type the following command:

    Set-SPPowerPointServiceApplication -Identity <ID> -ViewingWorkerProcessCount <N>


    • <ID> is the name or ID of the PowerPoint Web App service application.

    • <N> is the number of viewing worker threads.

Resolution:   Reset Internet Information Services on all front-end Web servers
  1. At the command prompt, type the following command, and then press ENTER:


Resolution:   Add another server to the farm
  1. If this failure keeps occurring even after you have followed the steps in all other resolutions, you should add a server to the farm to help load-balance the workload.

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