Printer manufacturers like Epson/HP/Brother/Canon make relatively little profit from the printer itself, but a great deal from selling ink cartridges afterwards. Their support pages sniff that their products are "designed to use only genuine branded print cartridges." Despite this, aftermarket cartridges usually work, but you may have to try a couple of workarounds.
It's important to recognise that a lot of the error messages you get with refilled or third-party cartridges are just messages. The big printer-makers tolerate aftermarket cartridges but display "nag" or error messages as a way to discourage less-knowledgeable users.
When your printer doesn't recognise a new cartridge, your first step should be to click OK or Accept on the error message and try again. If the error shows up on the printer's screen, use the built-in navigation keys to do the same. Sometimes, the printer works afterwards, but on occasion, you need to try a few more steps.
Some Quick Troubleshooting
Before you delve into software, check the cartridge. Make sure it's clean and that all metal contacts are ink-free and don't have any tape or other debris such as a stray hair or piece of paper lint stuck to them.
Snap the cartridge back into place and check that it fits tightly. Some cartridges may not be exactly the right size and shape, and you need to shim them in place with a piece of folded paper or card stock so that they make firm contact with the print head.
Ordinarily, you put an aftermarket cartridge into your printer because the old one runs out of ink. That means your printer might try to return an error message for non-genuine ink but get confused because the low-ink message is still in memory. That's often the cause of the "ink cartridge not recognised" (or similar) error message.
To clear it, remove all the ink cartridges and restart the printer. That clears out the memory and gives you a "no cartridges installed" error. At this point, you can reinstall your cartridges, and unless there are other issues, your printer should recognise them.
Sometimes the Deck Is Loaded
Major printer manufacturers have pledged not to lock out aftermarket cartridges automatically, but their periodic updates to your printer's built-in software may cause your existing cartridges to stop working. Therefore, I would advise to turn off all updates, they are NOT needed.
If you suspect a software update is at fault, contact our Customer Services team through our contact page - not the printer manufacturers - for a solution. When a workaround becomes available, we normally know.