Printer sporadically rejects wireless network password.

[k8_FRP]

My LaserJet Pro 200 Color MFP M276nw recognizes and accepts my wireless network password sometimes and connects to the wifi, but other times it insists that the password is incorrect.  The password has not been changed, and my computer is connecting using the same password to connect to the wifi whether the printer does or not. I have tried resetting the printer's network security to the defaults, resetting everything to defaults, and unplugging the printer for several minutes. Nothing changes this sporadic, unpredictable, and maddening failure to connect.  Firmware is current. 

I should add that I do not have access to the router, as the wifi is provided by the landlord.

[ShlomiL]

Hi,

May you have multiple SSIDs nearby? this would be a logical cause for such a random reject of an SSID.

From the Setup screen select Self Diagnostics, then click on Run Wireless Test and evaluate the printed report, may you see any such alert for the "Other networks detected matching your network name (SSID)" section?

https://support.hp.com/in-en/document/ish_1997043-2952612-16

Shlomi