I was configuring a Citrix XenApp 6.5 farm and we created some instruction video’s for the users to get used to the new interface and structure, we offered those video’s (*.wmv) via a URL on a streaming server via MMS. So far so good but when clicking on the button linking to the wmv’s files the wmv’s wouldn’t start. Apparently this is a common problem because Citrix released a kb article on it: Citrix XenApp 6 is Unable to Open MMS Files
The title says Citrix XenApp 6 but when looking at the article it says:
This document applies to:
XenApp 6.0 for Windows Server 2008 R2
XenApp 6.5 for Windows Server 2008 R2
So I changed to following key:
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1 |
"HKEY_CLASSES_ROOT\mms\shell\open\command_backup" |
| From: %programfiles(x86)%\windows media player\wmplayer.exe” “%l” | |
| To :“c:\program files (x86)\windows media player\wmplayer.exe” “%l” |
After a reboot of the server, when I tried to start the vmw’s I got the following error:
I figured it would be something to configure with Attachment Manager as explained here: Description of how the Attachment Manager works in Microsoft Windows
But after configuring the proper options I still would get this error. So I went searching on the internet and found a topic op the VMware forums saying you could disable the warning by creating a key:
Created registry key: [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\horizon]
Created DWORD called “WarnOnOpen” and set value to “00000000”
Based on this key I tried to create the following key:
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1 |
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\mms] |
With a DWORD called WarnOnOpen with the value “00000000”
And after a reboot I was able to open the WMV without any warnings improving the user experience.
Kees Baggerman
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