Printer troubleshooting technician providing live chat help

Joe B.

Reviewed for technical accuracy

Specialities: Windows 11/10, macOS (Sonoma/Ventura/Monterey), iOS/Android, Printers, Networking, Office Equipment

Wireless printer not accepting Wi‑Fi password — HP, Epson, Canon, Brother (WPA2/WPA3, 2.4 GHz/5 GHz)

Technician avatar Technician
Hey! We’ll fix the wireless printer won’t accept password error and get you reconnected. Tell me the brand — HP, Epson, Canon, or Brother — and whether you’re connecting to a 2.4 GHz or 5 GHz SSID. Also, do you use WPA2/WPA3 security, or are you trying WPS button / WPS PIN setup?
Customer
HP OfficeJet on a dual‑band router. The printer says Incorrect password every time. Phone and laptop connect fine. SSID isn’t hidden. We changed the Wi‑Fi password last week.
Technician avatar Technician
Got it. When a wireless printer says incorrect password but other devices connect, typical causes are:
• The printer is still cached to the old password — it needs a Forget Network / Reset Network Settings.
• Connecting to the 5 GHz band with a 2.4 GHz‑only printer (common on older HP/Epson/Canon/Brother).
• WPA3 or mixed WPA2/WPA3 security not supported by the printer firmware.
• SSID or password has special characters the printer UI rejects, or the SSID is hidden.
• Router features like MAC filtering, AP isolation, or guest network/captive portal block peripherals.
Plan: reset the printer’s network settings, reconnect on the correct 2.4 GHz SSID with WPA2‑PSK (AES), then update firmware.
Customer
Where do I reset network settings and select the right band?
Technician avatar Technician
Reconnect printer to Wi‑Fi (works for HP/Epson/Canon/Brother):
1) On the printer panel open Network → Settings and tap Restore Network Defaults / Forget Network.
2) Choose your 2.4 GHz SSID (often ends with “_2G”). Enter the current Wi‑Fi password exactly; avoid auto‑space or smart quotes.
3) Ensure router security is WPA2‑PSK (AES). If you use WPA3, enable compatibility mode or create a WPA2 SSID.
4) If the keypad is painful, run the vendor app: HP Smart, Epson Smart Panel, Canon PRINT, or Brother iPrint&Scan to push credentials via Bluetooth/USB.
5) Print a Wireless Network Test or Network Configuration report to confirm “Connected” and the correct IP address.
Customer
The router is set to WPA3‑Personal. Could that cause the password rejection?
Technician avatar Technician
Yes. Many printers only support WPA2‑PSK. With pure WPA3 they fail with “Can’t connect / wrong password”. Fixes:
• Switch the SSID to WPA2‑Personal (AES) or enable WPA2/WPA3 mixed mode.
• Alternatively, create a separate IoT/2.4 GHz SSID using WPA2 and connect the printer there.
• Update the printer firmware; some models gain WPA3 compatibility after updates.
Customer
WPS didn’t work either. Any tips for WPS button or PIN?
Technician avatar Technician
Use WPS correctly: press the router’s WPS button, then on the printer choose WPS Push within 2 minutes. For WPS PIN, enter the 8‑digit code into the router admin page. Note: WPS can be disabled on some ISPs or when using WPA3‑only; in that case connect via the app or temporarily enable WPA2.
Customer
After reconnecting, AirPrint on my iPhone still can’t see the printer. Windows sees it by IP.
Technician avatar Technician
AirPrint discovery fix: disable AP/Client Isolation and avoid guest networks with captive portals. Keep the phone and printer on the same 2.4 GHz SSID. On iOS, toggle Wi‑Fi and Bluetooth, then try Add Printer. On Windows, add via TCP/IP or Bonjour if supported.
Customer
Could special characters be the problem? Our password includes spaces and a dollar sign.
Technician avatar Technician
Some printer keypads reject non‑ASCII characters or add extra spaces. Try a temporary test password (12–20 chars, letters + numbers) on the router, reconnect the printer, then change back if needed. Also watch out for smart quotes pasted from phones.
Customer
Any brand‑specific steps if this happens again at the office? We have Epson and Brother too.
Technician avatar Technician
HP/Epson/Canon/Brother reconnect tips:
• HP: Use HP Smart → Set Up a New Printer → send SSID/password. On panels, run Restore Network Defaults and Wireless Setup Wizard.
• Epson: Smart Panel app → Wi‑Fi Setup. Some models have Wi‑Fi Auto Connect requiring 2.4 GHz only.
• Canon: Canon PRINT → Easy Wireless Connect / WPS. Make sure Direct Connection is off after setup so it uses your home SSID.
• Brother: Use iPrint&Scan or Control Panel → Network → WLAN → Setup Wizard; ensure MAC filtering is not blocking it.
Customer
It finally connected on 2.4 GHz with WPA2. Anything else to make the connection stable?
Technician avatar Technician
Great! For reliability: reserve a DHCP address for the printer (router “Address Reservation”), update firmware, and keep the SSID the same across access points. If you ever change the Wi‑Fi password, run Forget Network on the printer before reconnecting so it doesn’t keep the old credentials.
Customer
Perfect — it connects and AirPrint works. Thank you!
Technician avatar Technician
Summary: If your wireless printer won’t accept Wi‑Fi password or shows incorrect password, reset network settings, connect to a 2.4 GHz SSID using WPA2‑PSK, avoid WPA3‑only, and push credentials via the vendor app. Check for MAC filtering, guest network, or AP isolation. Need hands‑on help? Open the chat.

Quick answer: the accepted fix

Accepted fix when wireless printer won’t accept password: Forget/Reset Network on the printer, join the 2.4 GHz SSID using WPA2‑PSK (AES), or use the vendor app (HP Smart / Epson Smart Panel / Canon PRINT / Brother iPrint&Scan) to send the correct Wi‑Fi password. Avoid WPA3‑only, disable AP isolation, and update firmware.

Printer says “incorrect password” after you changed Wi‑Fi

If you changed the SSID or key, the printer still stores the old credentials. Run Restore Network Defaults, reconnect to the 2.4 GHz network, and re‑enter the new password. If the router uses WPA3, switch to WPA2 or mixed mode. Avoid hidden SSID and passwords with unsupported characters.

How to verify the printer is connected

Print a Network Configuration page. It should show Connection: Active, the correct SSID, 2.4 GHz, WPA2‑PSK, and an IP address. From a PC or phone on the same network, browse to that IP to open the printer’s web interface. If discovery fails on iPhone/iPad, check that you’re not on a guest network with isolation.

Wireless reconnect — troubleshooting tips

Most Wi‑Fi password errors are band/security mismatches or cached credentials.

Quick path: confirm router security (prefer WPA2‑PSK) → use 2.4 GHz → Forget Network on the printer → push credentials from the vendor app → check router rules (MAC filtering, isolation, guest network) → update printer firmware.

Disclaimer: This information is AI-generated and intended for general guidance only. For advice specific to your environment, please consult a verified expert on Whizz-Tech before making decisions.

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FAQ

Why does my wireless printer say the Wi‑Fi password is incorrect?

Common reasons: cached old credentials, trying to join a 5 GHz SSID on a 2.4 GHz‑only printer, WPA3 security not supported, or router features like MAC filtering and guest isolation. Reset network settings and reconnect to a 2.4 GHz WPA2 network.

How do I reconnect my HP/Epson/Canon/Brother printer to Wi‑Fi?

Use the vendor app (HP Smart, Epson Smart Panel, Canon PRINT, Brother iPrint&Scan) or the panel’s Wireless Setup Wizard. Choose the 2.4 GHz SSID, enter the correct password, and print a Network Configuration page to verify.

Can WPA3 or mixed WPA2/WPA3 cause “password not accepted”?

Yes. Many printers only support WPA2‑PSK (AES). Use WPA2 or mixed mode, or create a separate IoT SSID for the printer. Update firmware when available.

AirPrint can’t find my printer after reconnecting — what now?

Ensure your phone and printer are on the same SSID, disable AP/Client Isolation, and avoid guest networks. Restart the router and the printer, then try adding the printer again.

What about Wi‑Fi Direct or the admin password?

Wi‑Fi Direct uses its own passcode and does not connect the printer to your home Wi‑Fi. The printer’s admin password (web page) is different from your router Wi‑Fi password; be sure you’re entering the network key when joining the SSID.

Common Wi‑Fi password problems and quick fixes
SymptomLikely causeQuick fix
“Incorrect password” on printer Old credentials; WPA3 only; 5 GHz band Reset network; use 2.4 GHz WPA2; re‑enter password via app
AirPrint can’t see printer Guest network; AP isolation Use main SSID; disable isolation; same band for phone/printer
WPS fails WPS disabled; security mismatch Enable WPS or connect with WPA2 password via vendor app
Connects, then drops DHCP lease changes; roaming issues Reserve IP; update firmware; keep SSID consistent across APs

Step‑by‑step (Windows 10/11)

  1. Open the vendor app (HP Smart etc.) → Add Printer → follow Wi‑Fi setup.
  2. Or browse to the printer’s IP → run Wireless Setup Wizard and enter the SSID and WPA2 password.
  3. In Windows, remove old entries in Printers & scanners, then Add device again (Wi‑Fi or TCP/IP).
  4. Print a test page; if offline, check router band and security.

Step‑by‑step (macOS/iOS)

  1. Reconnect with the vendor app or the printer panel; prefer 2.4 GHz WPA2.
  2. On Mac, System Settings → Printers & Scanners → remove old queue → Add Printer (AirPrint or IP).
  3. On iPhone/iPad, ensure the device is on the same SSID; toggle Wi‑Fi/Bluetooth and try AirPrint again.

Sources

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