TS Gateway - Remote Desktop - Showing old certifcate

I have a TSGateway with RemoteApp setup.  I had originally used a self-signed certicate. Then I purchased a certifcate from digicert.  When they first connect the new ssl cert connects them fine, but when I go to open remoteapp it still shows the old self-signed certifcate even though I removed it from everywhere I could find.

Where might it still be finding the old certifcate from and how do I remove it?
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You might need to re-publish the remoteapps
DavidRS4Author Commented:
Tried republishing the remoteapps.  The user still gets the old certifcate...
DavidRS4Author Commented:
End User had to upgrade their version if RDP to 7.0 and then everything worked fine.

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DavidRS4Author Commented:
Discovered client needed to upgrade RDP version.
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Windows Server 2008

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