Ambir ImageScan Pro 490i not detected
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We have a Ambir ImageScan Pro 490i (double sided check scanner), I love it and the NAPS2 PDF scanner has been wonderful. Unfortunately, we have to move over to a new computer and Windows 11. NAPS2 no longer detects the scanner. Is there a way I can make this work again?
THANK YOU!
Progress -- turning off Windows firewall allowed the scanner to be discovered. But -- it doesn't work -- "TWAIN session open error: failure"
debuglog.txt
2025-09-26 16:22:51.8220 8996 Scanning with ScanDevice { Driver = Twain, ID = ImageScan Pro 490i, Name = ImageScan Pro 490i, IconUri = , ConnectionUri = }
2025-09-26 16:22:51.8283 8996 Scan source: Duplex; bit depth: Grayscale; dpi: 300; page size: 8.5x11 in
2025-09-26 16:22:52.1008 2160 Debug: Using new dsm.
2025-09-26 16:22:52.1834 2160 Using TWAIN DSM: C:\Program Files\NAPS2\lib_win32\twaindsm.dll
2025-09-26 16:22:52.1893 2160 NAPS2.TW - Opening session
2025-09-26 16:22:52.1893 2160 Debug: Thread 1: OpenManager.
2025-09-26 16:22:52.2331 2160 NAPS2.TW - StateChanged (to 3)
2025-09-26 16:22:52.2368 2160 Debug: Using TWAIN2 memory functions.
2025-09-26 16:22:52.2368 2160 NAPS2.TW - Finding source
2025-09-26 16:22:52.2368 2160 Debug: Source id = 1
2025-09-26 16:22:52.2368 2160 NAPS2.TW - Finishing with error NAPS2.Scan.Exceptions.DeviceNotFoundException: The selected scanner could not be found.
at void NAPS2.Scan.Internal.Twain.TwainScanRunner.Init()
2025-09-26 16:22:52.2989 2160 Debug: Thread 1: CloseManager.
2025-09-26 16:22:52.2989 2160 NAPS2.TW - StateChanged (to 2)
2025-09-26 16:22:52.3034 2160 Debug: Using old dsm in windows. not C:\Program Files\NAPS2\lib_win32\twaindsm.dll
2025-09-26 16:22:52.3034 2160 Using TWAIN DSM: C:\windows\twain_32.dll
2025-09-26 16:22:52.3034 2160 NAPS2.TW - Opening session
2025-09-26 16:22:52.3034 2160 Debug: Thread 1: OpenManager.
2025-09-26 16:22:52.3276 2160 NAPS2.TW - StateChanged (to 3)
2025-09-26 16:22:52.3430 2160 Debug: Thread 1: CloseManager.
2025-09-26 16:22:52.3620 2160 NAPS2.TW - StateChanged (to 2)
2025-09-26 16:22:52.3674 2160 NAPS2.TW - Finishing with error NAPS2.Scan.Exceptions.DeviceException: TWAIN session open error: Failure
at void NAPS2.Scan.Internal.Twain.TwainScanRunner.Init()
I figured it out (downloaded the Ambir driver)