"We didn't recognize this serial number" when registering Xbox Controller to Microsoft Account.

Hi 6ixsaeed! My name is Ricardo an independent advisor ready to help you with this situation!

If your controller isn’t working and needs replacing, enter the controller’s serial number at the bottom of this page. You can find the serial number inside the battery compartment, below the barcode.

https://support.xbox.com/en-US/help/hardware-ne...

Bought it around 2 years ago haven't used it much. I tried to register the controller number, it gave me "We did not recognize this serial number

Check the serial number, then try logging in again..." I asked MS support agents about it, they told me that the controller is not supported anymore. I gave one agent the number they tried to register it to my account they couldn't.

It says "We didn't recognize this serial number" and I got the number from behind the battery and from the box the controller came in

Unfortunately, because i bought the elite controller on its own, i cant seem to register it. When asking where to find the serial number there is no option for the xbox elite series 1. Other people have said unless you bought the package (Which i didn't)
there the serial number option doesn't register the serial number of the controller. the only way to register a xbox elite controller is to by the paddle package and then the serial number is accepted. Personally i don't want to have to buy something just
to be able to see if a warranty is still active.

For some reason, I was able to register my Series 2 under my Microsoft account when I bought it. I can go in a request a replacement from there, but not through the Xbox support site where it tells me the serial number doesn't exist.

Try logging into your Microsoft account at account.microsoft.com , register your controller under devices if you haven't, and hope it recognizes you have the extended warranty when you request a replacement