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Unable to project more than 32 Stations in Windows Multipoint Server 2011

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Symptoms

Consider the following scenario:

  • You have a computer that is running with Windows MultiPoint Server 2011
  • You use the Multipoint Manager to manage MultiPoint Server system
  • In the Selected Item Tasks on the Desktop Tab you select more than 32 stations

In this scenario, the option for Project my station to selected stations in the Selected Item Tasks on the Desktop Tab disappears. Also, under the General Tasks on the Desktop Tab, the Project my station to all stations would not show up if you have more than 32 stations available.

Note: If you unselect some stations to bring the total number down to 32 or below, the option is available again.

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Cause

This is an expected behavior that the Multipoint Manager cannot project the Teacher’s Station to more than 32 stations.

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Workaround

To workaround this behavior, modify the MaximumAllowedViewers registry value. 

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756How to back up and restore the registry in Windows


Follow below steps to modify the MaximumAllowedViewers registry value to increase the number of stations that Multipoint Manager can project:
  1. Open Registry editor (regedit.exe)
  2. Locate and then select the following registry subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows MultiPoint Server\Orchestration\
  3. Right-click on the Orchestration key and then choose Export. Give the file a name and then save it.
  4. From the right-side pane, double-click on MaximumAllowedViewers registry value and input a higher value.
  5. Click on OK to close out of the editor and then exit the registry editor.
  6. Restart the computer.
Note: This is a user based setting

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Keywords: kb

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Article Info
Article ID : 2820202
Revision : 1
Created on : 1/7/2017
Published on : 4/18/2013
Exists online : False
Views : 284