Zebra Link-OS printers do not authenticate to WLAN using Vxx.20.01Z firmware

Article ID: 79118815

Issue / Question

Zebra Link-OS wireless printer users may experience an inability to authenticate to their WLAN after upgrading to Vxx.20.01Z firmware.

Mobile printers dropping off the network

Applicable To

Zebra Wireless Link-OS Printers using Vxx.20.01Z firmware

Resolution / Answer


Some wireless network controllers and access points may be unable to properly negotiate the WPA key exchange when authenticating the wireless printer if Protect Management Frames is in use. This feature is enabled by default in Vxx.20.01Z firmware.


Disable the Protected Management Frames feature on the printer. Turning this feature off will not cause any loss of performance or functionality.

Using the Zebra Setup Utilities (ZSU), open a direct communications window and send the following command to the printer:

! U1 setvar "wlan.pmf" "disabled"

For more information, refer to Zebra Setup Utilities: Sending Files to a Printer.

Reboot the printer and ensure that it properly authenticates onto the wireless network.

+ Applicable Products

  • QLn Series Healthcare Mobile Printers
  • QLn Series Mobile Printers
  • QLn220 Healthcare
  • QLn220 Mobile Printer
  • QLn320 Healthcare
  • QLn320 Mobile Printer
  • QLn420 Mobile Printer
  • ZD410 Series
  • ZD410-HC
  • ZD410D
  • ZD420 Series
  • ZD420-HC
  • ZD420C
  • ZD500 Desktop Printer
  • ZD500 Desktop Printer
  • ZQ520 Mobile Printer
  • ZT210 Industrial Printer
  • ZT220 Industrial Printer
  • ZT230 Industrial Printer
  • ZT400 Series Industrial Printers
  • ZT410 Industrial Printer
  • ZT420 Industrial Printer
  • iMZ Series Mobile Printers
  • iMZ220 Mobile Printer
  • iMZ320 Mobile Printer