Tutorial: Resolving HP Scanner not found or communication error

[Any_Name_123]

Hello

I’d like to share with you a tutorial about how to resolve the problem with HP Scan not finding your printer/scanner and/or you can’t use other win32 programs with your scanner.

Problem summary: Getting messages about “Scan was not found” or Checking connection, etc … and can’t scan no matter what you do.
Background: Windows 10 + AIO Printer configured wirelessly (wifi).

• Try to reinstall your printer driver (this didn’t resolve it for me)
• Using “HP Print and Scan Doctor” – Download it from here http://ftp.hp.com/pub/printers/hppsdr/HPPSdr.exe (This also didn’t work)
• Still not resolved? From here, where this tutorial begins.

First we need to disable IPV6 and enforcing IPV4

1. Go to “HP Printer Assistant Program” (this program named after your printer, in my case it is “HP Officejet 8720” app accessible from Windows Start menu)
2. Click on “Printer Home Page (EWS)”
   A new page in your internet browser shall be opened with your Printer IP
3. In the upper right there is “Network” Click on it
4. From left at General section, click on “Network Protocols” and select “Enable  IPv4 only” then click on “Apply”.
   
   While you are here, you might want to disable “WIFI direct” as you will find its option in this page, again this is unnecessary and up to you.
   
   
5. You have done  half the procedures by now.
   
   

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Restart your computer

I’ll be waiting you here …

Welcome back (You actually restarted, didn’t you?)

Time to restart Windows Image Acuistion (WIA) services:

1. From your keyboard press the following combination: Windows Start Key (Hold it) + X. In other words: Hold “Windows / Flag” Key and Letter “X” (together)
2. Click on “Commands Prompt (Administration)” or something similar.
   A black window will open, write the following commands:
   

   net stop stisvc

   Click on Enter
   

   net start stisvc

   Click on Enter

Alternatively, you could do the same thing by running “services.msc” and stop/start “Windows Image Acquisition (WIA)”

You are almost done

Start “HP Printer Assistant Program” or in my case "HP Officejet 8720" in order to update your printer configuration and try to use the scanner.

Hopefully, by now this resolved your problem.