Printer suddenly unable to connect to network (invalid password)

I've had this printer for half a year and haven't had any issues with network connection till recently. For some reason my printer will no longer connect to our network. I've typed in the correct password multiple times but it always comes up with an invalid WPA passphrase.
My laptop and other devices have no problems connecting to the internet. The printer recognizes the wireless network but says the passphrase is "invalid". I printed the diagnostic and it says, "The WPA security passphrase configured on your HP printer does not match your wireless router setting". The solution they gave was "Run the wirless Setup Wizard to re-enter your wireless network WPA security passphrase."
The solution does not help.
Some of the results from the printed diagnostic test:
Connectivity> connected = Not Run
Disconnect count total= 70
Network> Network SSID Found= PASS
Settings> Printer settings consistent with wireless router settings, no filtering, channel = Not Run / Security = FAIL
Current Configuration> Authentication Type = WPA- PSK / Encryption= Automatic (AES or TKIP)
We are running on a 802.11 network, channel 11 (I don't really know what this means..but maybe it's helpful information?)
If anyone has some insights that would be greatly appreciated!!

My printer mysteriously started working again as well. Nothing has changed on my equipment. What gives?
As for the "Great" support from HP with the Static IP address, I don't see any replies from HP on this thread helping us out.

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Printer suddenly unable to connect to network (invalid password)

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