Owners of modern office devices often face a situation where they need to connect a new device to an existing printing network, but the access key is lost or forgotten. HP LaserJet Pro MFP M28w is a popular model that supports wireless printing, and understanding its security principles is critical for setup. Unlike simple routers, its security system can be based on Wi-Fi Direct or standard WPS, which requires different approaches.
There are several proven ways to restore access, from viewing the factory sticker to using the built-in web server. It's important to understand that Wi-Fi router passwordThe network to which the printer is connected and the printer's password (access point mode) are different things. In this guide, we'll cover all the details of restoring access to the wireless module of an HP device.
Before embarking on complex manipulations, it's worth noting that the security of your data directly depends on the complexity of the character combination. If you plan to change the settings, ensure the new protection is sufficiently secure but also memorable for all authorized users.
Hardware methods for finding passwords on the case and labels
The easiest and most often overlooked way to find out credentials is to physically inspect the device. On the back or bottom panel HP LaserJet Pro MFP M28w An information sticker with technical data is located here. This is where the manufacturer places factory settings, including the Wi-Fi Direct PIN, which is often used as the default password.
Pay attention to the field labeled "PIN" or "Password." In some cases, especially if the device is new and has never been reconfigured, this 8-digit combination will be valid. However, if the printer was previously used on a corporate network, the administrator may have changed these values through the control panel.
⚠️ Caution: If the sticker on the case is damaged, worn, or missing, do not attempt to remove other parts of the device. This may void the warranty. In this case, proceed to the software reset or EWS viewing methods.
For devices with illegible labels, you can try printing a configuration report. To do this, press and hold the "Cancel" button (the cross) on the control panel for a few seconds until the indicators flash. The resulting document often contains duplicate information about network settings and the current security status.
Using the Embedded Web Server (EWS) to view settings
If the printer is already connected to the local network (via cable or previously configured Wi-Fi), the most powerful management tool is the Embedded Web Server. To access the interface, you need the device's IP address, which can be found by printing a network report or viewing the status on your computer in the "Devices and Printers" section.
In the address bar of any browser (Chrome, Firefox, Edge) enter the IP address, for example, 192.168.1.45After clicking the address, the control panel will open. HP LaserJet Pro MFP M28wGo to the "Network" tab and select "Wireless 802.11" or "Wi-Fi Direct." Your current security settings are displayed here.
- 🔍 In the "Wi-Fi Direct Settings" section, you will see the network name (SSID) and the current password, if it is set manually.
- ⚙️ The "Security" tab allows you not only to view but also change the encryption method to a more modern one WPA2-Personal.
- 📝 Write down or copy the displayed character combination in a safe place for future reference.
Please note that access to EWS may be protected by a separate administrator login and password. If the system prompts you for authorization when you log in and you haven't set one, try leaving the password field blank or using the default "admin."
Reset network settings to factory defaults
In situations where it is impossible to find out the current password and access to the device is urgently required, the only solution is a complete reset of network settings. This operation will restore HP LaserJet Pro MFP M28w to its original state, deleting all saved Wi-Fi profiles and passwords.
To reset the printer, turn it off. Then press and hold the "Wireless" and "Cancel" buttons simultaneously. Without releasing them, turn the printer on. Continue holding the buttons until all the lights flash simultaneously. This indicates a successful reset.
☑️ Checklist before resetting the network
After this procedure, the device will create a new access point with the factory name and password indicated on the sticker. You will need to repeat the initial setup procedure through the app. HP Smart or the installation wizard on your computer.
Setup via the HP Smart app and mobile devices
Modern ecosystems allow you to control your printer from your smartphone, which opens up an alternative way to obtain information. The app HP Smart, available for iOS and Android, can display connection details when connected to a printer.
Go to the printer settings within the app and select "Network Settings" or "Advanced Settings." If the printer is in Wi-Fi Direct mode, the app will often display a QR code or text string containing the access key for other guests to connect. This is especially convenient when you need to quickly grant access to a colleague without searching for paper instructions.
You can also change the wireless module's operating mode via the mobile app. You can switch the device to "Infrastructure Only" mode (connection via a router), which eliminates the need to remember a separate password for the printer itself, as it will use the security of your primary Wi-Fi network.
⚠️ Please note: The HP Smart app interface is updated periodically. The button layout may vary depending on your smartphone's OS version and the app's current availability in the App Store or Google Play.
Table: Comparison of access recovery methods
To organize the information and select the method most suitable for your situation, use the comparison table. It will help you evaluate the labor intensity and requirements for each method.
| Method | Necessary conditions | Complexity | Risk of data loss |
|---|---|---|---|
| Sticker on the body | Physical access, readable label | Low | Absent |
| Web Interface (EWS) | Knowing the IP address, access to the network | Average | Absent |
| Reset with buttons | Physical access to the panel | Low | High (reset all settings) |
| HP Smart app | Smartphone, preliminary communication | Average | Absent |
As the table shows, the safest method is to search for information on the sticker or in the web interface. Resetting should only be used as a last resort, after all other options have been exhausted.
Wi-Fi Direct Security Issues and Recommendations
Using factory passwords, which are often standard across entire product lines, carries risks. An attacker within range could theoretically gain access if they know the printer model. Therefore, after restoring access, it is strongly recommended to change them. Wi-Fi Direct PIN to unique.
You can do this through the web interface under "Network" -> "Wi-Fi Direct" -> "Settings." Create a password that doesn't contain obvious sequences (for example, 12345678 or your birth year). Also, consider disabling Wi-Fi Direct mode if you only use the printer from home through your main router. This will reduce the attack surface of your home network.
Why doesn't the printer see the 5 GHz network?
The HP LaserJet Pro MFP M28w model only supports the 802.11b/g/n standard, which operates in the 2.4 GHz band. If your router only broadcasts at 5 GHz, the printer simply won't detect it. You need to enable 2.4 GHz broadcasting in your router settings.
Regularly updating your device's firmware also patches vulnerabilities in security protocols. Check the firmware's current status using the "Scan" or "Device Maintenance" tab in the web interface. New firmware versions often contain patches that address vulnerabilities in wireless security.
Frequently Asked Questions (FAQ)
What should I do if the wireless button on my printer is not responding?
If the Wi-Fi button is on HP LaserJet Pro MFP M28w If the printer doesn't light up or respond to presses, the wireless module may be blocked by software or malfunctioning. Try a cold reset: unplug the printer from the power outlet for 30 seconds. If the problem persists, check whether the wireless printing function is disabled in the settings under "Setup" -> "Reports" -> "Configuration" to see the module's status.
Can this printer be connected to a hidden Wi-Fi network?
Yes, HP LaserJet Pro MFP M28w Supports connecting to networks with a hidden SSID. However, for initial setup, you'll still need to temporarily enable network name display on your router or use the WPS method (if your router supports it and has a physical button) to transfer the hidden network settings to the printer.
Where can I find the driver if I lost the installation disk?
Driver discs often contain outdated software. Current drivers and full software packages should always be downloaded from the official HP support website. Enter your model. LaserJet Pro MFP M28w In the search field on the website, select your operating system and download the recommended package.
How many devices can connect simultaneously via Wi-Fi Direct?
The Wi-Fi Direct technology implemented in this model typically supports up to five devices simultaneously. However, for reliable printing and fast transfer of large documents, it is recommended that no more than one or two active devices be connected to the printer's access point at any given time.
How do I change the interface language if the printer displays hieroglyphs?
If the printer's on-screen menu is in a language you don't understand, use the web interface (EWS). Access it from your computer and go to the "System" or "Settings" tab. There you'll find the "Menu Language" option, where you can select Russian or English, and the settings will be applied to the device itself.