Regex to validate Windows product key

Question

_{Wednesday, February 3, 2016 5:03 PM}

Hello,

I need to write regex to validate Windows product key. 

Please help me on this.

thanks in advance.

Mahadevan.G

All replies (2)

_{Wednesday, February 3, 2016 5:18 PM ✅Answered}

If it is 25-character code without special restrictions, then try this expression:

    ^([A-Z0-9]{5}-){4}[A-Z0-9]{5}$

_{Wednesday, February 3, 2016 5:18 PM}

Do you only want to validate the 5 times 5 digits with 4 dashes product keys or do you want to validate the validity of the product key against Microsoft's generated keys? For the last you can't. For the first, then you need a regex which validates 1-9 or A-Z, 5 times, with 4 dashes between the blocks of 5 chars:

^[A-Z1-9]{5}(-[A-Z1-9]{5}){4}$

Dennis Bakker | Hobby developer | Microsoft Community Contributor

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