Epson WF-C5790 Printer/Scanner question. Missing registry issue in Windows 10

Mike Lieberman 1 Reputation point

This question was initially posted on and I was advised to post it here. Apologies if that advice was inaccurate. What follows is exactly what I posted there.

I am aware that there are a large number of Epson related posts here and I have reviewed them.

My Epson unit is, over all, working fine but there is one noticeable issue regarding the Epson software (and yes I did call Epson and they 1 denied that there was any problem with their software; 2 stated that WiFi was better and more reliable that cat6 into a managed switch; [3]blamed the switch for a one-off issue); and [4] generally were of no help).

And Yes, I am aware that the Scanner function does not work in a way that allows Windows to know it exists. So the Windows Scanning utility doesn't know the Epson exists.

Here's what I CAN DO:

Print to the unit from my PC.

Scan from the Unit to my PC.

So you would think, OK, what's the issue, right?

Well it's the Epson Scanning software. It doesn't store the address of the Scanner. Each time I want to scan, I have to teach the PC what the address of the Printer/Scanner is.

Neither the PC nor the Epson use DHCP. Both have static addresses on the same address block. My PC is and the Epson is Both have a netmask of Both connect to the same managed (Cisco) switch and they see each other just fine.

But every time I open the Epson Scanner program it shows:
And I have to click on Add
So does ANYONE know what the registry keys are for the Epson code to teach it where the scanner is?

Windows 10 Compatibility
Windows 10 Compatibility
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Compatibility: The extent to which hardware or software adheres to an accepted standard.
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  1. Dave Patrick 426.3K Reputation points MVP

    Might try the new firmware here.

    or ask here for help with your hardware.

    --please don't forget to upvote and Accept as answer if the reply is helpful--

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  2. Mike Lieberman 1 Reputation point

    Hi DSPatrick.

    I have the newest code from Epson. I uninstalled and reinstalled. I asked Epson for help on a 50 minute courteous conversation whereby I was told that my problem was using Cat6 and a managed switch.

    Further attempted contact with them has been met with silence. I am simply looking for someone who has this unit installed and can five me a readout of the registry, as Epson refuses to do it.

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  3. Limitless Technology 39,461 Reputation points

    Hi there,

    So the only trouble here is that Epson is not capturing the static IP of the PC , so can you check whether you are running the Epson app in Compatibility mode

    1) Right-click on the Epson Scan icon on the desktop - Properties.

    2) Go to Compatibility tab. If the check box next to Run this program in compatibility mode for, uncheck it. Then click the OK .

    And also check if the WIA services are running and is set to automatic , other troubleshoot would be to update the drivers which off course you might have tried .And frankly what is it between Wifi and Cat6 cable , both should do the same work I suppose .And it seems the trouble is with Epson this can be sorted only the Epson or other's you had the issues and found an work around .

    Hope this Answers all your queries , if not please do repost back .
    If an Answer is helpful, please click "Accept Answer" and upvote it : )

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