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Printer says Wi-Fi is on but can't be reached from network

HP Recommended
Color LaserJet MFP M281fdw
Microsoft Windows 10 (64-bit)

Our M281fdw keeps disconnecting from our business network.  When it does, the printer's display shows that Wi-Fi is on and that it is connected.  However, we can't connect to it from other systems on our network.  Not even "ping" can reach it.


The printer gets its IP address from our DHCP server, where there is a reservation so that the printer always has the same IP address.  Using the "Network Summary" report, I've confirmed that the DHCP server has the correct MAC address and that the printer is getting the correct IPv4 address, subnet mask, and default gateway.


On the "Network Summary" report, it claims that the signal strength is "Excellent."


The printer cannot be reached from elsewhere on our network.


Our network monitoring system shows the printer is currently connected to a Wi-Fi access point with a good signal (-63 dBm).  It also shows that there is Wi-Fi traffic between the printer and the access point.  But the printer is not responding on its IPv4 address.


This is aggravating to the multiple people trying to print to this printer.  The only way to get printouts is to reboot the printer and see how many documents it will print before it disconnects from the network.

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