Solution to Lost Microsoft Windows XP & Windows Vista Serial Key

By Sidharth | How-to

If you have lost your Microsoft Windows XP/Windows Vista Serial key number then here are some solution to retrieve the serial number. For Windows xp users if you have your original CD with you then Insert WINDOWS XP CD into the player and Just explore the cd to find a folder called i386 where you will have a file unattend.txt.

Open the text file and you will find the CD serial key of your Windows Xp when you scroll to the bottom, use the serial key and make sure you save the license number on a paper as well, just to be on the safer side.

Another solution for most of the Microsoft product keys is to use 3rd party applications such as key finder which is a small executable file searching the windows registry to gather serial keys instantly.

Keyfinder is one such freeware open source utility which is the easiest solution to retrieve your Product Key (cd serial key) and also saves the serial keys of un bootable Windows applications in text or csv format. Key finder 2.0.1 works with Windows 95, 98, ME, 2000, Windows  XP, Server 2003, Server 2008, Office XP, Office 2003 and the latest update supports Windows vista, so retrieving the lost key can be done through the registry files automatically by such freeware software. Download Keyfinder v2.0.1

Another free utility is License Crawler which not only searches for Microsoft Windows product keys but also does a high speed scan of various installed software’s retrieving a bunch of serial keys in quick time. Hopefully these ideas will help you to retrieve the lost serial keys and as a note – Always make sure you save and make multiple prints of your serial keys using above  method to be on the safer side! I hope the solution helps whenever you have lost the Microsoft Windows original CD.

About the Author

Hi, I am Sidharth. Full-time blogger. Editor of Blogote. And a self-proclaimed geek!

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(14) comments

norman November 10, 2012

I had lost my windows xp key #, but I found it in the disk itself, but will not accept it to run o.s.

yus April 10, 2010

thank you so much! great ans.

chris September 15, 2009

found the xp key will try to install later and get back to u cheers

Babar Bilal September 15, 2009

Sir, i got problem in Windows Vista when restarted my computer, windows demads a seriel key but i dont have it, could you plz tell some of them, if you have.

    Kevin December 31, 2009

    Last Month I Had The Same Problem So I Bought A New Retail Product Key From A Friend His Email Is It Only Cost Me $40 And He Gets The Product Key Directly From Microsoft He Has Every Microsoft Key You Can Imagine. Good Luck Hope this Post Helps.

pedro ferrandiz August 28, 2009

thanks found my product key..

Martiuh August 28, 2009

Thanks ¡¡
It does help a lot 😀

chinmaya August 19, 2009

plzz gave me window vista serial key

Jamesy August 18, 2009

Some Windows XP Professional Keys


Reply July 2, 2009

need window xp serial key

abhishek June 3, 2009

sir i have lost my serial key for windows vista i m unable to reformat my pc.
plzzz give me serial keys for this.. i will be always grateful to u …looking for +ve response by u ……..thanks,..

Ben March 11, 2009

I found a product key but it they key wasn’t valid. Any other way using a mac osx software?

maged saleh March 6, 2009

WOOOOOOOOOOOOOW that really worked and i found the product key , THANKS

kuanhoong October 21, 2008

Well if you can’t the serial number or product key, you can always switch to something that is free and as good as Microsoft Windows, Office etc by using Open Source software. 🙂

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