Log in to the workstation where the scanner is connected / installed to.
If Citrix receiver was installed by a user with administrative rights, do the following:
Open the registry editor (regedit) and locate the following:
HKEY_LOCAL_MACHINE - SOFTWARE - Citrix - ICA Client - Engine - Configuration - Advanced - Modules - ICA 3.0
Right click 'VirtualDriver' and delete 'TwainRdr,' from it. Press 'OK' and close the registry editor.
If Citrix receiver was installed by a user without administrative rights, do the following:
Open the registry editor (regedit) and locate the following:
HKEY_CURRENT_USER - SOFTWARE - Citrix - ICA Client - Engine - Configuration - Advanced - Modules - ICA 3.0
Right click 'VirtualDriver' and delete 'TwainRdr,' from it. Press 'OK' and close the registry editor.