How to upgrade the OCR pro module from trial to full

Once you have tested the OCR pro module and found it a good fit for your application, you can upgrade from the trial version to the full version following the steps below.

  1. Uninstall the old Dynamsoft Service with the file UninstallService.bat (run it as admin) which comes with all OCR pro samples
  2. Install Dynamic Web TWAIN full version on the server, if you don't have the installer, please contact Dynamsoft Sales
  3. Copy OCR-related resources which can be found in all OCR pro samples to the installation folder of Dynamic Web TWAIN typically located at C:\Windows\SysWOW64\Dynamsoft\DynamsoftService\
    • /OCRProResource/
    • DynamicOCRPro.dll
  4. Update your code to use the correct URL for OCR requests, for example
    • From the trial one: ""
    • to the full one: ""
  5. Update your code to use the full-version product key. Take a code snippet from our OCR pro samples for example, you can replace the following field in bold with your purchased key
    • strRequestBody += "\"productKey\": \"" + Dynamsoft.WebTwainEnv.ProductKey + "\",";
  6. Rebuild your application and verify the upgrade
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