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HP Software does not start scan

HP Officejet 8500 pro A910
Microsoft Windows 10 (64-bit)

The HP program does no more start the scan function.
Windows scan program works normal, Scan doctor checks the configuration successfully and starts a testscan.
If I connect via browser to the printer I may use the scanner.
The printer is twice in the scan doctor printer list, Once with the network node name and once with the IP4 address.
The Scan doctor reports for the second printer each time software not complete and reinstalls the software each time.

To solve the problem I tried to delete and reinstall the printer in Windows, I changed connection form IP4/IP6 to IP4 only in the printer setup..
But the HP printer program shows two printer (node name, IP4 addr), but does no more start scan.


The printer HP Officejet 8500 pro A910 is connected via Ethernet to the router, the HP software is installed on Lenovo E470 Windows10 64 pro 1909.

 HP print programm ("C:\Program Files\HP\HP Officejet Pro 8500 A910\Bin\HP Officejet Pro 8500 A910.exe" -Start UDCDevicePage in "C:\Program Files\HP\HP Officejet Pro 8500 A910\Bin\")

How may I get more information or diagnosis about the problem to use again HP software to scan?


Thanks in advance




HP Officejet 8500 pro A910, WIN 10 pro 1909
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