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Scanning using a scanner on 64-bit Windows Vista or Windows 7 may cause a TWAIN aware application to hang.

Source: Microsoft Support
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Summary
Symptoms


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.

 
Cause


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.

 
Resolution


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.

 
Advanced Steps
More Information


This behavior is by design.

 
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Properties

Article ID: 982436 - Last Review: 04/08/2010 08:24:08 - Revision: 1.0

Windows 7 Home Premium, Windows 7 Professional, Windows 7 Enterprise, Windows 7 Ultimate, Windows Vista Home Premium, Windows Vista Business, Windows Vista Enterprise, Windows Vista Ultimate

  • kbrapidpub KB982436
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