LAN connected (not shared) printer does not see Windows 10 desktop

Hi - I'm finally giving up and asking for help. My networking knowledge consists of some networking for end users and basic business networks.

Computer: HP desktop, (LAN) Intel 82567V-2 Gigabit Network Connection, (WiFi) Qualcomm Atheros 802.11 a/b/g/n Dualband Wireless Network Module.

Router: TP-Link WR841N v9, Firmware: DD-WRT v3.0-r30880 std (11/14/16).

Printer: Canon MF4570dn connected to router by LAN

Problem description: The printer only sees the desktop (and will only work/interface) if the desktop's WiFi is enable/connected. If the WiFi is disabled and I am only using a wired LAN connection (to the router from the desktop), then the printer does not see the desktop. It doesn't matter if the printer is set to use "Auto IP" or if I use a static IP address - the symptoms are the same. It appears to be something related to the router as the previous routers (Netgear AC1700 and Airlink 101) did not have any problems. I have not had to change the network settings on the printer since for years.

I have been researching for a couple of months, but my phrasing of the searches always come up with "network printers" and the printer is not set up and has never been set up as a network printer.

Any advice will be greatly appreciated. If more information is needed I will provide it.

Thanks in advance for any assistance.

Welcome to the forum. does the printer show up in the router as connected try this tool from a few pcs see if it sees the printer NetResView - View computers/network shares.
If your using wireless you may not see it if AP Isolation is turned on inthe router this stops wireless seeing the local network page 51 http://setuprouter.com/router/tp-lin...manual-740.pdf

I have been researching for a couple of months, but my phrasing of the searches always come up with "network printers" and the printer is not set up and has never been set up as a network printer.

Sorry but that printer probably is on a LAN/Local Area Network connection. The parts of a Network consist of a computer, a Router or Switch and a printer or other device. I have 2 printers connected by Ethernet cable to an 8-port Switch which is connected to a 4-port Router. I have 4 computers connected to the Router/Switch units along with 2 NAS drives, all using Ethernet cable. Then I have anywhere from 2 to 4 or 5 Notebooks connected to the Router via Wi-Fi for both Internet access and print use. I use Windows, Linux and macOS computers and any can print if I install suitable software and all can Map and access the NAS drives. All this is the LAN or internal Network, going out onto the Internet [Router outbound] is known as the WAN/Wide Area Network. Installing the software from disc or download gives the choice of Network, USB or Wi-Fi, even Wireless Direct. One printer is an HP Officejet and the other is an HP Laserjet.

Samuria said:

Welcome to the forum. does the printer show up in the router as connected try this tool from a few pcs see if it sees the printer NetResView - View computers/network shares.
If your using wireless you may not see it if AP Isolation is turned on inthe router this stops wireless seeing the local network page 51 http://setuprouter.com/router/tp-lin...manual-740.pdf

Hi
The printer is seen by the router and wireless devices (Android tablet, Android smartphone) can print. The desktop can print and the scanner can see the HP if I am scanning using the printer's buttons BUT only if the HP has the WiFi enabled and connected.

Berton said:

Sorry but that printer probably is on a LAN/Local Area Network connection. The parts of a Network consist of a computer, a Router or Switch and a printer or other device....

Yes, the printer is on a Local Area Network connection.

Berton said:

Sorry but that printer probably is on a LAN/Local Area Network connection. The parts of a Network consist of a computer, a Router or Switch and a printer or other device. I have 2 printers connected by Ethernet cable to an 8-port Switch which is connected to a 4-port Router. I have 4 computers connected to the Router/Switch units along with 2 NAS drives, all using Ethernet cable. Then I have anywhere from 2 to 4 or 5 Notebooks connected to the Router via Wi-Fi for both Internet access and print use. I use Windows, Linux and macOS computers and any can print if I install suitable software and all can Map and access the NAS drives. All this is the LAN or internal Network, going out onto the Internet [Router outbound] is known as the WAN/Wide Area Network. Installing the software from disc or download gives the choice of Network, USB or Wi-Fi, even Wireless Direct. One printer is an HP Officejet and the other is an HP Laserjet.

Sorry, I meant to say that it has not been set up as a 'shared' printer.

I didn't have to Share the printers, they are for all intent and purpose stand-alone printers meaning any particular computer does not have to be running for other computers to use the printers. The NAS drives make things simple for storing data which allows any computer to access it whether Windows, Linux or Mac OS X/macOS.

Update: Tried an Asus RT-N12/D1 N300 router. And it worked correctly. No changes to printer's network settings.
Reflashed the firmware on the TP-Link router back to the factory firmware and it is working normally. It appears there is a problem with the DD-WRT firmware (or a setting that is incorrect). I will mark as solved.
Thanks for the quick responses!

Solution found!
The problem was with the router (firmware?). After completing the following the issue is resolved:
1) log in to your router IP. "192.168.1.---"
2) on DD-WRT GUI, select ADMINISTRATION
3) select COMMANDS
4) in commands box enter the following code (make sure there are no spaces at the end):
swconfig dev eth0 set enable_vlan 1
swconfig dev eth0 set apply

5) below the box click RUN COMMAND
6) If this runs without error, then lastly click SAVE TO STARTUP.

Hope this helps anyone else with this problem.

It's been a little over a year, but I'm wondering if DaveW10 would explain his post above in manual steps? I used your solution and would like to be able to configure same manually instead of a startup command every time. Thanks for the fix!

I had a similar problem, posted it on the HP support forum, then used your solution & posted it there:

Wired M451dn won't connect to setup software; Airprint OK, downloaded & installed online firmware OK



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‎02-23-2018 11:13 PM
Product Name: LaserJet Pro 400 Color M451dn
Operating System: Microsoft Windows 10 (64-bit)

HP basic printer drivers can't find my wired LaserJet Pro 400 Color M451dn. It's got it's correct IP address, shows up on my DD-WRT router (TP-Link TL-841N) as active, and DHCP client (has static DHCP reservation). LaserJet's Airprint is working OK, even downloaded & installed online firmware through printer menu & LAN no problem. Computer is online fine, as is printer; they just can't see each other when installing drivers.

Used auto-search, IP address, MAC address, host name: no dice.
Uninstalled drivers & updated firmware, then tried drivers install again: no dice.
Shut off every device: cable modem, router, switch, computer, printer: no dice.
Changed ethernet port from switch to router: no dice.
Wiggled all ethernet cables: no dice.
Installed print & scan doctor: no dice.
Running Norton Internet Security, disabled firewall: no dice.

All OS software updated & current.

Gigabyte GA-Z97-HD3 motherboard
Intel Core i7 4790K CPU (OC 4.6 GHz)
16GB RAM
Using Windows 10 Pro 64-bit
(Triple-boots 64-bit versions: Windows 7 Ultimate, Windows 10 Pro, Windows 10 Pro Insider Preview.)

driver: v. 15.0.15188.1840 10-27-2015, file: LJM351_M451_Series-15188-drv_installer

Help a brutha