64-bit version is not available till Dynamic Web TWAIN 6.3. If you are developing a desktop application using an older version of Dynamic Web TWAIN control in Visual Studio, please change Solution Platform to “x86” before building the application.
To register DynamicWebTwainCtrl.dll (32 bit) and DynamicWebTwainCtrlx64.dll on 64-bit machines, please follow the steps below:
1. Run Command Prompt as administrator.
2. Go to the "C:\Windows\SysWOW64\" directory via command line.
3. Run the "regsvr32 DynamicWebTwainCtrl.dll" or"regsvr32 DynamicWebTwainCtrlx64.dll" command.
If you are developing a web application, please check the article here.
