You must modify the web interface to allow ScrewDrivers to work with Remote Desktop via the web interface. Without these modifications ScrewDrivers is unable to create a virtual channel within the Remote Desktop Protocol. Please follow the appropriate directions:

Windows Server 2003

1. Edit the web portal's html file, typically default.htm in C:\inetpub\wwwroot\tsweb\default.htm. Check Internet Information Service (IIS) if you do not know where the Remote Desktop html file resides.
2. In the html file find "Device redirection options". It should read as:

'Device redirection options

MsRdpClient.AdvancedSettings2.RedirectDrives = FALSE

MsRdpClient.AdvancedSettings2.RedirectPrinters = TRUE

MsRdpClient.AdvancedSettings2.RedirectPorts = FALSE

MsRdpClient.AdvancedSettings2.RedirectSmartCards = FALSE

* the TRUE or FALSE values may differ in your environment

3.  Add the following line of code at the end of the "Device redirection options" section:

MsRdpClient.AdvancedSettings.PluginDlls = "sdrdp5.dll"

After you finish, the "Device redirection options" should read as:

'Device redirection options

MsRdpClient.AdvancedSettings2.RedirectDrives = FALSE

MsRdpClient.AdvancedSettings2.RedirectPrinters = TRUE

MsRdpClient.AdvancedSettings2.RedirectPorts = FALSE

MsRdpClient.AdvancedSettings2.RedirectSmartCards = FALSE

MsRdpClient.AdvancedSettings.PluginDlls = "sdrdp5.dll"

4. Save this file and restart the Internet Information Services service.

Windows Server 2008

1. Open up the "web.config" file in the TS web directory, typically C:\Windows\web\ts\web.config on your server.

2. Look for these entries:

<add key = "xPrinterRedirection" value = "true" />
<add key = "xClipboard" value = "true" />
<add key = "xDriveRedirection" value = "false" />
<add key = "xPnPRedirection" value = "false" />
<add key = "xPortRedirection" value = "false" />

Add the following:

<add key = "xPluginDlls" value = "sdrdp5.dll" />

3. Restart IIS