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HP officejet 8620, HP TWAIN SCAN gives error, it's said the component is used several times.

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HP officejet 8620
Microsoft Windows 10 (64-bit)

HP officejet 8620, I can print, but not scan any more. HP TWAIN SCAN gives error, it's said the component is used several times. Scandoctor suggests restarts or reinstallation, but that didn't help

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Not sure.


One idea...


Assuming HP Twain has been installed with your Full Feature Software,

You are (or have been) using HP Twain Scan either as a separate call or from within another software (for example, Irfanview),


The HP Twain scan software might be hung (stuck, lost in the process list),


Possibly as a result of Windows thinking it is running the software "more than once" in the process list


Perhaps the process is running in a closed (minimized) instance.


If either of these are true, then

Finding and closing the running instance (in Windows)


Restarting the computer should kick the process free.


For those reading, an example of HP Twain software (where available, part of the installation for the Full Feature Software),

Example - HP Twain Scan





Example - Running HP Twain Scan software from within  Irfanview  software







Printer  Home Page - References and Resources – Learn about your Printer  - Solve Problems

 “Things that are your printer”

NOTE:  Content depends on device type and Operating System

Categories:  Alerts, Access to the Print and Scan Doctor (Windows), Warranty Check, HP Drivers / Software / Firmware Updates, How-to Videos, Bulletins/Notices, Lots of How-to Documents, Troubleshooting, User Guides / Manuals, Product Information (Specifications), more

When the website support page opens, Select (as available) a Category > Topic > Subtopic

HP Officejet Pro 8620 e-All-in-One Printer series 


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