When a 32-bit TWAIN aware application scans using a WIA driver on a 64-bit Windows Vista or Windows 7 system, the TWAIN application may stop responding.
If you leave the scan dialog open for about ten minutes before you push the [Scan] button, the message used to transfer the scanned image from the WIA driver to the TWAIN application is not sent to the TWAIN application.
This problem can be avoided by doing either of the followings:
- Scan image soon after you open the scan dialog.
- Use a WIA aware application, not a TWAIN aware application.
This behavior is by design.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, MICROSOFT AND/OR ITS SUPPLIERS DISCLAIM AND EXCLUDE ALL REPRESENTATIONS, WARRANTIES, AND CONDITIONS WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT LIMITED TO REPRESENTATIONS, WARRANTIES, OR CONDITIONS OF TITLE, NON INFRINGEMENT, SATISFACTORY CONDITION OR QUALITY, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE MATERIALS.
Article ID: 982436 - Last Review: Apr 8, 2010 - Revision: 1