: Available at DriverIdentifier for specific desktop builds (e.g., HCL or ASUS). Manual TWAIN Installation via Compatibility Mode
The original UMAX Astra 5800 driver was written for . These were 32-bit operating systems that used a different driver model (VxD and WDM). Windows 7 64-bit requires that all kernel-mode drivers be digitally signed and adhere to the WDF (Windows Driver Framework) standard. The old UMAX drivers have neither. umax astra 5800 scanner driver for windows 7 64 bit best
If you have the original driver CD or the Windows XP setup file, you can try forcing an installation: Microsoft Learn : Available at DriverIdentifier for specific desktop builds
Some users have successfully used generic "Image Device" drivers when the scanner isn't detected: umax astra 5800 scanner driver for windows 7 64 bit best