cannot register my device on my microsoft account

Question

cannot register my device on my microsoft account, when trying to register my dell inspiron 5593 windows pc i keep getting the following:-

"We didn't recognise this serial number

Please check your serial number, then try entering it again.For Surface power supplies and Surface Pen (including the tip and charger), register your Surface, start an order, then select accessory to start a service order.For Xbox adaptors, charging kits, controllers, headsets and power supplies, register your Xbox, start an order, then select an accessory to start a service order.If you're having issues with all other Surface or PC accessories, request a replacement .For all other Xbox accessories,contact us."

Answer 1

Dear David Hutton

Welcome to Microsoft Q&A. I'm Haien from Microsoft Q&A.

May I ask if you have tried my suggestions for your case? I hope you can keep me updated on your issue in the future.

Your satisfaction is Microsoft's priority.

Warm regards

Answer 2

Dear David Hutton

Thanks for reaching out! Welcome to Microsoft Q&A. I'm Haien from Microsoft Q&A.  

 Thanks for reaching out with your question about registering your Dell Inspiron 5593 on your Microsoft account. The "We didn't recognize this serial number" issue is not a bug or a problem with your Dell PC. It is a fundamental design of the Microsoft account device registration page, which is meant for managing Microsoft's own hardware products for warranty and service purposes. The "Register a device" option on the Microsoft account website is specifically designed for Microsoft-branded hardware, like Surface devices, Xbox consoles, and their accessories. Since your Dell PC is manufactured by a different company, its serial number won't be recognized in that system.

To provide the most accurate solutions, could you clarify:

• Where are you finding the serial number, you’re entering? (e.g., sticker on the laptop, BIOS, or command prompt output)
• Are you signed into Windows with the same Microsoft account you’re trying to register the device with?

From that situation, I highly recommend you try these workarounds:
Solution 1: Sign In with Microsoft Account to Automatically Register Device

• On your Dell PC, press the Windows key + I to open Settings > Accounts > Your info.
• If you see the option to "Sign in with a Microsoft account instead" > click on it and follow the on-screen instructions to sign in with your Microsoft account email and password.
• Wait a few minutes, then visit https://account.microsoft.com/devices > check if your Dell Inspiron 5593 appears under “Devices.” If it doesn’t appear, restart your laptop and check again after signing in.

Solution 2: Verify and Correct Serial Number

• Check the physical sticker on the bottom of your Dell Inspiron 5593 for the Service Tag. If you don't have, please open Command Prompt > Run as Administrator > Type these following commands and press Enter to see the output**:** wmic bios get serialnumber
• If the sticker and command output differ, contact Dell Support to update the BIOS serial number
• Try registering again at https://account.microsoft.com/devices using the Service Tag, though manual registration may still fail for non-Microsoft devices.

 For additional information for similar situations, please visit this article to know: Manage devices used with your Microsoft account - Microsoft Support

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Please keep me updated with anything new that you were try to each option.

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We appreciate your patience and look forward to resolving this quickly for you.

Warm regards