If you can tell me the and the specific error message you're seeing, I can find the exact official steps to fix it.

Once you have a valid code from Xerox , you can enter it via the printer’s interface or a web browser: Default System Administrator Username and Password

In conclusion, while Xerox supplies activation code generators may seem like a convenient or cost-effective solution, they pose significant risks to your printer, network, and business. It's essential to prioritize the quality and performance of your Xerox products by purchasing genuine supplies and using authorized activation codes. If you have any concerns or questions, I recommend contacting Xerox support or an authorized dealer for assistance.