PUB2000: How to Reinstall Scanner Software

This article describes how to reinstall the TWAIN components installed by Microsoft Publisher and the software that comes with your scanner. This article is intended to be general in nature and discusses only the TWAIN component of image scanning software. Some software vendors may have specific reinstallation steps that apply to their software.

To reinstall the TWAIN components, follow these steps:

1. Remove the following files from your Windows folder:
   • Twain.dll
   • Twain_32.dll
   • Twunk_16.exe
   • Twunk_32.exe
2. Rename the \Windows\Twain folder and or \Windows\Twain_32 folder. This folder contains a proprietary library file that is installed with your scanner software and has a .ds extension.
   
3. Install the software that came with your scanner to its default location. This should replace the .ds file.
4. Test the scanner software, by itself, to see if it works. Try scanning a picture directly into Publisher. If the test is successful, you are done. If the test fails, go to step 5.
5. On the Help in Publisher, click Detect and repair.

If you are still unable to scan directly from Microsoft Publisher, then Publisher is probably not compatible with the TWAIN interface of your scanner.

NOTE: TWAIN is a standard protocol that allows many different kinds of scanners and digital cameras to work with many different software programs. It is developed jointly by a number of companies, including Logitech and Hewlett-Packard.

For additional information, please see the following article in the Microsoft Knowledge Base: