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Note: From May 27, 2025, the HP Print and Scan Doctor will no longer be available (retired) and HP will not release any further app updates. You can learn more by clicking here Replacement for Print and Scan Doctor.
Common problems HP Solution Center not working : Adobe Flash Player Error and Unable to scan
We would like to share some of the most frequently asked questions about HP Solution Center not working : Adobe Flash Player Error and Unable to Scan.
HP Recommended
Microsoft Windows 10 (64-bit)

HP Scanjet 4890 issue with scanning slides.  The images are black or mostly white whether I'm using the slide tray or scanning individual slides.  I do know to remove the white TMA cover for slide film and to use the Transparency option.   Someone suggested I needed to be sure that the transport switch is in the unlocked position.  I do not see any type of switch on this device.   Is there one?  Also, please suggest an application replacement for HP scanning application for the scanjet since HP has dropped support for their application. 

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