Problems with cartridges z10 in my HP Officejet PRO 8620

[Marualva05]

Hello 

Recently my printer is rejecting the cartridges 951 and 950 XL because they are not z20. I have never used z20 cartridges before because they are just used in Europe.

How can I solve this?

Thank you very much in advance for your support.

[Bob_Headrick]

What country are you in?  

On the front panel of the printer go to the home screen and press the ink droplet icon at the top of the screen.  Next touch the black rectangle.  At this point a new window will open that says "installed cartridge" and "Supported cartridge".  What are the cartridge numbers listed?

HP introduced regionalized cartridges (Z10, Z20, Z30 and Z40) for the previously universal 950/951 cartridges in about January 2017.  The printer will "lock" itself to the first Zxx cartridge installed in the printer.  If you are in the US/Canada you will need Z10 cartridges, but the printer may have been locked to another region by accident.  In that case you will need to have HP perform a "Regionalization Reset".  You will need to Contact HP to request a "Regionalization Reset". There should not be any charge for this, it is covered as part of the cartridge warranty. You will need to have access to your computer and printer while on the line with HP. You will also need to have a set of cartridges for the new region, once the reset is complete cartridges from the original region will no longer work.  HP's web page on the subject is here.

I have seen folks reporting success asking for a regionalization reset on HP's Support Facebook page.