My Printer works but when I try to scan it has suddenly decided there is no computer found.

[LawOfficeMN]

I have  scanned items every day for over a year here, and today I went to scan as usual and the printer says 'no computer found', & 'to scan to a computer, make sure that the scanning software has been installed & configured in your computer'. I followed the instructions for Windows (from the same scanner message) and the instructions told me to click on things that do not appear when I open the software. It will not allow me to scan but the printing from the computer works fine.  I have tried the HP support assistant and it appeared to fix something, but then I tested it and it didn't work. After that it asked if there were still issues, i clicked yes, it appeared to scan again and stopped with an alert window that says 'extraction failed, cannot delete output file" I tried this a couple times and each time it does the same thing.

We are connected by cord and I cannot think of anything I might have installed or changed that could have done this. 

[Anand_Andy]

Hi @LawOfficeMN,

Welcome to the HP Support Community

I understand you are facing issues with the scan option with your HP OfficeJet Pro 8715 All-In-One Printer. I really appreciate your efforts in using HP print and scan doctor as well. Not to worry I will help you to get a resolution to resolve the issue.

Let's perform a Root uninstallation: I recommend you delete the driver and root level and retry, follow the steps below: 

• First, unplug the USB cable from the printer if present.
• Go to Control panel – Programs and feature – Select all the HP printer entries and uninstall them.
• Now go to Control panel – Devices and printer – Select all the printer entries and remove the device.
• Restart your computer.
• Click the bottom-left Start button on desktop, type device manager in the search box and tap Device Manager on the menu.
• Once in device manager, click on the view tab in the top & choose “Show hidden devices”.
• Then from the device manager list, check the entries under “Printer” – If there are any entries, please right click and choose “uninstall” – In the confirm device un-install pop-up, make sure you select the box which says “Delete the driver software for this device". 
• Also, check the entries under "printer queue" and "imaging devices" and repeat the same exercise. Delete any printer entry or any entry which says “Unknown device”.
• Once done, close device-manger. Then press the "windows key" + "r" to get the "Run" window open - Type "printui.exe /s" and press enter.
• Under print server properties, go to drivers - remove any entry there as well.
• Again, go running window, type – “c:/programdata” – Go to Hewlett Packard folder, remove any printer related folders & files.
• Once done you can try cleaning out your temporary files and cached files. You can try using automated applications like some cleaner software's that you can download from the internet.
• Now restart your computer again.
• Open the Run window again, type “services.msc” and press ok to get services window.
• Scroll down to “Remote Procedure Call (RPC)” – right-click and go to properties. Make sure the service is started and startup type is “Automatic”.
• Now scroll up and go to “Function Discovery Provider Host” – right-click and select properties – Change the startup type to “manual” and start the service.
• Repeat the same exercise on “Function Discovery Resource Publication” as well
• Windows image acquisition stop and restart the service 
• Use this link to download and install the new driver. Configure the printer and try scanning.

Hope this helps! Keep me posted. 

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