Color Laser 150nw not accessible by its IP

[WorstXperience]

Bought new 150nw, download and run driver install v1.2 from 123.hp.com as guided by the quick start leaflet. The driver install managed to transfer the WLAN info to the printer and get it online. It then failed to finish with error message that the printer doesnt communicate and I should change my network settings. I've finished the setup by connecting via USB and install went through smootly. I've printed the network diagnosis page that showed the printer is online in my WLAN and it also shows up in my router with its host name and obviously same IP. I've deactivated the Windows and 3rd party firewall and still can't access the EWS (by using the IP) and neither HP Smart, nor HP Smart Repair Doctor or the Driver Installer find the printer, even if I try to connect by entering the IP or host name. Next step would be to reset the printer Wi-Fi settings back to standard and start all over.

Edit: I just repeated the Wi-Fi install with same result. Printer is online (WLAN) but doesn't respond to any connection attempts. Tried HP Smart App on my Android mobile and it also can't find the printer.

[zoey7886 · Accepted solution]

@WorstXperience, Welcome to the HP Support Community!  

Thanks for reaching out about your query regarding your Color Laser 150nw! 

We're thrilled to have the opportunity to assist you and provide a solution.  

Since you’ve already done quite a bit of troubleshooting, here are a few additional things to check:

Confirm Printer’s Network Connection

Print a Network Configuration Page (Press and hold the Resume button until the Ready light starts blinking, then release).

Check if the IP address matches your network’s range (e.g., if your router is 192.168.1.X, the printer should have a similar IP).

Ensure the Subnet Mask and Default Gateway are correctly assigned.

Ping the Printer

On your Windows PC:

Open Command Prompt (Win + R, type cmd, press Enter).

Type: ping [Printer's IP Address] and hit Enter.

If you get a Reply, the printer is online but may be blocked by software.

If you get Request Timed Out, the connection isn’t properly established.

Check Wireless Isolation & Firewall Settings

Some routers have Wireless Isolation enabled, which blocks devices from communicating. Check your router’s settings and disable it if needed.

Even though you disabled firewalls, check Windows Defender Security settings under Network & Internet > Advanced network settings to ensure nothing is blocking communication.

Manually Add the Printer

Open Control Panel > Devices & Printers

Click Add a Printer > The printer I want isn’t listed

Select Add a printer using TCP/IP address

Enter your printer’s IP address, follow the prompts, and see if it connects.  

Let me know how it goes!

Take care, and have an amazing day!  

Did we resolve the issue? If yes, Please consider marking this post as "Accepted Solution" and click "Yes" to give us a helpful vote - your feedback keeps us going!  

Regards, 

[WorstXperience]

I already tried pinging the printer during initial setup and that failed. But your hint to check the router for "Wireless Isolation" was correct. While in my router it's not called like that it did the same and it's a default setting. Unchecking the box did the trick and now I can print from all devices. Big thanks Zoey!

[zoey7886]

@WorstXperience, A huge thank you for marking this post as the 'Accepted Solution'! We're thrilled that we could help resolve your issue. 

If you have any more questions or need further assistance, please don't hesitate to ask. We're here to help! 

Thanks again for your confirmation, and we wish you an amazing day ahead! 

Regards,