I was having issues with the Wireless network interface on my Color laserjet MFP M281fdw. The printer is reachable at startup, but only for a few seconds. Then all pings to the IP address are lost. My Wifi network still sees the printer on the network, but no IP traffic is coming through.
Connecting the printer to the network using a cable, then every thing is fine.
After some tweaking of my Wifi network, I discovered that connecting this printer to an open wifi network (no password) also works fine... This triggered me to change the wifi password to something shorter, and not using spaces. Now it also works fine!
I had no problems with the firmware that was installed in the factory. I don't know what that version was.
Upgraded the firmware to 20190716 and the issues started.
Upgraded to the latest firmware 20200612, and the issues remained.
This looks like a bug in the Wifi Firmware of the printer.
Ideally, there should be no spaces in a password. You may either use a number, letter, or a special character. A 'space' cannot be read by the printer language.
We can try resetting the printer to its factory settings as there is no option to downgrade the printer firmware. However, as you have changed the wifi password(with no spaces) and it is working fine now, it is upto you if you want to reset the printer. I would not recommend it.
Hope this helps! Keep me posted.
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