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Common problems for Connectivity Issues
We would like to share some of the most frequently asked questions about Printer Wi-Fi, Connectivity Issues and Offline Status. Check out this link: Printer Wi-Fi, Connectivity Issues and Offline Status..
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Laserjet not working wirelessly

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HP Laserjet Pro M203dw
Mac OS X 10.11 El Capitan

I changed routers (same brand—tp-link—) because the first one quit. I connected everything wirelessly (Canon printer, iPad iPhone, MacBook), but can’t get my Laserjet Pro M203dw to work wirelessly, although it will with a USB cable. I get the message, “ WPA authentication method on printer has been changed from the default setting. This may cause problems when connecting to your wireless network."

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@Kaliarose, Welcome to HP Support Community!


To reconfigure the printer, follow the steps from the document HP Printers - No Connection after Router or Wi-Fi Settings Change.


Additionally, refer to the document Connect to a Wireless HP Printer for help.


If you still have issues, use the guided troubleshooter Troubleshooting | Wireless Printing Center for instruction to isolate and resolve the issue.


Hope this helps! Keep me posted. 


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