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Error message when visting PowerPoint broadcasting site

Has anybody experienced the following behaviour?

created a serverfarm with 2 WFE's and 1 APP serverr Installed and configured Office Web Applications (no errors) Created PowerPoint Service Application which created the PowerPoint Broadcasting site(no errors) when visiting the broadcasting site, the following error is shown:

The base type 'Microsoft.Office.Server.Powerpoint.Web.MossHost.PowerPointSiteTemplatePage' is not allowed for this page. The type is not registered as safe.

The environment is completely OOB. The strange thing is, is that the broadcasting service can be used via PowerPoint 2010 without any issues.

If anybody has ideas about this, please let me know?





3 Answers Found


Answer 1

Hi, Andries


       Would you please firstly check if safe  control nodes existed in web.config file in Driver:\inetpub\wwwroot\wss\VirtualDirectories\port folder  in all your WFEs?


 Best Regards,




Answer 2

I doesn't :-(

Strange as this is an OOB site  template. If you have any ideas on how to pursue this, please let me know.

Best regards,



Answer 3


Following may be a reason in your setup.  Please make sure the build number 14.0.4763.1000 (RTM) matches with Office Web Apps and SharePoint server  2010


SharePoint 2010 Products Configuration Wizard needs to run on all Servers where Office Web Applications installed.  From the Documentation http://technet.microsoft.com/en-us/library/ff431687.aspx  copied the information to your reference:


Run PSConfig to register services

Complete this task to register the Office Web Apps services on a single SharePoint server. This task must be performed on each server in the server farm.

Thank you,

Sundar - MSFT




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