XenApp 4.5/5.0 2003 & 2008
The following registry locations are the same for both 32-bit and 64-bit servers.
If you want to enable read-only Client Drive Mapping, set the following registry key on each XenApp server:
  1. Open the registry and navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdm\Parameters
  2. Create a DWORD value with the value name ReadOnlyMappedDrive and value data 1.
  3. Restart the XenApp server.
If you want to enable read-only Clipboard Mapping, set the following registry key on each XenApp server.
  1. Open the registry and navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\Virtual Clipboard
  2. Create a DWORD value with the value name ReadOnly and value data 1.
  3. Restart the XenApp server.
XenApp 6.0/6.5 2008 R2
If you want to enable read-only mapped drive, set the following registry key on each XenApp server:
  1. Open the registry and navigate to HKEY_LOCAL_MACHINE\SYSTEM\Current Control Set\services\picadm\Parameters
  2. Create a DWORD value with the value name ReadOnlyMappedDrive and value data 1.
  3. Restart the XenApp server.
If you want to enable read-only Clipboard Mapping, set the following registry key on each XenApp server.
  1. Open the registry and navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\Virtual Clipboard
  2. Create a DWORD value with the value name ReadOnly and value data 1.
  3. Restart the XenApp server.
   
Reference：CTX123456