EzDent-i: 3rd Party TWAIN device not launching

Written on Aug 27, 2025

First ensure the 3rd party TWAIN device driver has been installed and tested working in a 3rd party test tool such as  Twack32 Twain Test tool. Once confirmed working and saving into the TWAIN test tool, if the TWAIN device does not launch from EzDent-i please try the following steps: 

  • Open C:\Program Files (x86)\VATECH\EzDent-i\Setting
  • Open the Twainconfig.ini
  • Edit the USE_Twain20_DLL = ON or OFF 

    ON : Normally used for NEWER TWAIN source drivers
    OFF: Normally used for OLDER TWAIN source drivers


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