When XP SP3 came out, Microsoft in their infinite wisdom, disabled the mstscax.dll from running within Internet Explorer 7. This little tidbit is the .dll that ActiveX calls for the terminal services client when connecting to a remote PC from the Small Business Server Remote Web Workplace. Basically a big middle finger to all those customers out there running their Small Business Server and using Remote Web Workplace. Still today THEY HAVE NOT FIXED THIS. They leave it to the end user, consultant, and/or admin to figure it out.
Here is the wonderful message that pops up when trying to connect to a remote desktop within Remote Web Workplace:
The first step is to first see if the add-on within IE7 is there and is simply disabled. I have yet to see this happen. 99% of the time the add-on is simply no longer there at all.
Either click on Tools – Add-ons or click the gear at the bottom of the web browser. This will load the add-on window. Look for the Microsoft Terminal Services client.
IF you see it there and it IS disabled. Simply enable it and you’re good to go.
Most likely that won’t be the case.
So first try to register the mstscax.dll file.
Then restart IE7 or IE8 and give it a shot. If it still doesn’t work then the next step is to remove the registry key:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{7584C670-2274-4EFB-B00B-D6AABA6D3850}
Of course backup your registry prior. If that all fails look at the below article describing all of this from Microsoft.
http://support.microsoft.com/kb/951607
And to think. You may have to walk a client or end user through this? Give me a break Microsoft.
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