Printer won't connect to wifi

[As1173]

Trying to connect my HP desk jet 4100e series . Everytime I try to connect to my wifi it tells me my password is incorrect and it gives me an error -3 

[Hawks_Eye]

@As1173,

Welcome to HP Support Community.

Thank you for posting your query, I will be glad to help you.

If your HP DeskJet 4100e series printer is not connecting to WiFi and showing Error -3 (incorrect password) despite entering the correct credentials, try these steps.

Restart Everything

• Restart your router: Unplug it for 10-15 seconds and plug it back in.
• Restart your printer: Turn it off, unplug for 10 seconds, then turn it back on.
• Restart your computer/phone (if using HP Smart app for setup).

Use the Correct WiFi Network & Password

• Ensure you're connecting to the 2.4GHz WiFi band (many HP printers don't support 5GHz).
• Re-enter the WiFi password carefully, ensuring:
  • No extra spaces
  • Correct capitalization
  • No special characters that the printer might not recognize

Factory Reset the Printer & Reconnect

Reset WiFi Settings:

1. Press and hold the WiFi button (or WiFi + Cancel button) for 5-10 seconds until the WiFi light blinks.
2. Wait for the light to blink continuously, meaning it's in setup mode.

Reconnect Using HP Smart App:

1. Open the HP Smart app (on phone or PC).
2. Select Set Up a New Printer → Follow on-screen instructions.
3. If the app asks for WiFi, manually type the password instead of copying/pasting.

Manually Connect Printer to WiFi (Alternate Method)

If HP Smart isn't working:

1. Press the Information (i) button on the printer to print a Network Configuration page.
2. Find the printer’s WiFi Direct name (e.g., HP-Setup-4100).
3. On your phone/computer, connect to this network.
4. Open a browser and go to 192.168.223.1 (printer's built-in web page).
5. Find Wireless Settings → Enter your WiFi credentials.

Check Router Settings

• If the issue persists, check if MAC Address Filtering is enabled on your router and disable it temporarily.
• Ensure the router supports WPA2 security (some older routers may cause connection issues).

I hope this helps.

Take care and have a good day.

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Hawks_Eye

HP Support