05-23-2017 09:49 AM
Welcome to HP Support Forums. 🙂 I came across your post and would like to help.
I understand that you have an HP Officejet 4620 e-All-in-One Printer and have installed the HP 564 cartridge and the printer does not accept it. I read that you're in Africa.
To provide an accurate resolution, I need a few more details:
Meanwhile, I did some research and found the below cartridge compatibility list based on the region you're in:
This list indicates that the HP 564 is for the North America and the Asia-Pacific regions. For Africa, you need to use the HP 178 numbered cartridge.
I hope this information helps. Feel free to keep me posted for any questions. Cheers! 🙂