Disabling RES VDX

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If you’re like me you spend a lot of time on customer sites and a vast amounts of time using the RDP client to connect to various client machines and servers. It may just be me, but I find the whole RES VDX popup notification when starting an RDP session rather distracting. It’s fine if the client has the VDX Engine installed in the hosted desktop, but more often than not they don’t. Worse still, when integrating RES Workspace Manager with VDX it becomes even more frustrating when connecting with Admin accounts as, typically, the RES Workspace Composer is disabled. This results in VDX connecting in “time trial” mode, bringing the local applications through into the remote session and then dropping them with a pop up notification. Grrrr!

It’s for this very reason that I set off looking for how to disable the integration and allow me to re-enable it if necessary for testing. I checked the available Administration Pack but it doesn’t allow us to suppress the notification so off I went to Google. It didn’t take too long to find out where the RDP and ICA add-in settings are stored in the registry. The ICA key is only created if the Online and the locations are different for RDP and ICA..

Key 32-bit/64-bit: HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Default\AddIns\RESVDX
Value: Name
Type: REG_SZ
Data 64-bit: C:\Program Files\RES Software\VDX Plugin\VDXRDPPlugin_x64.dll
Data 32-bit: C:\Program Files\RES Software\VDX Plugin\VDXRDPPlugin_x86.dll

Key 32-bit: HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA Client\Engine\Configuration\Advanced\Modules\RESVDX
Key 64-bit: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\ICA Client\Engine\Configuration\Advanced\Modules\RESVDX
Value: DriverNameWin32
Type: REG_SZ
Data: VDXICAPlugin.dll

The simplest solution I’ve found is to rename the plugin DLL references in the registry so they’re not loaded. Renaming the individual registry keys doesn’t appear to work as the Add-In keys are still enumerated even though the key names have changed. I, for example, rename the above .dll filenames to .dl_ in the registry to disable the integration and set them back when needed. I have 2 .REG files; one to disable the integration and one to enable to make my life easier because I’m like that!



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