Find Windows XP Product Key From Your Installation CD [How To]

Have you lost your Windows CD Key and are desperately looking for it? No backups, nothing. What do you do now? Well till you have your Original installation you can easily find the Product key without breaking a sweat.

Here are the simple steps you need to perform in order to get your Product Key from the installation CD.

(Note: This may only work for certain OEM CDs, if it does not work for you, you can check out our earlier post on how you can find your Windows XP Product key.)

  1. Insert the Installation CD into your CD / Drive Drive.
  2. Explore the CD and navigate to the i386 folder.
  3. Open the file UNATTEND.txt and scroll down to the last line.
  4. You will find your Windows XP Product key there.

We were able to find the CD key on a Windows XP Corporate Edition installation CD and would love to know if you were able to find it on your own installation CDs. Do let us know through your comments on how it went for you.

Via: [Cool Tech Tips]

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  1. Moldova on June 25th, 2008 at 10:00 am #

    This is very nice. I didn’t knew it.

    • sagar on January 17th, 2011 at 2:28 am #

      Johnny u r really great thank you very very very very veryyyyyyyyy much …u are genius….:)

    • Rachana on July 6th, 2011 at 5:21 am #

      Well it really worked. Thanks a lot.

  2. Techblissonline Dot Com on June 26th, 2008 at 1:00 am #
  3. Magie on June 26th, 2008 at 2:40 am #

    I use to write the key prouct in the back f the CD cover. It’s conventional way, but it helps me a lot. Thanks anyway for your tip.

    • tawi on February 29th, 2012 at 6:42 am #

      There’s nothing on the back of my CD cover, so I was more than happy to finally find out what this pesky key was!

  4. Paul on September 3rd, 2008 at 6:12 am #

    Thats brilliant. Not sure how I never knew this before. Just saved my arse as well as we have a ton of legit XP disks but no CD keys anywhere!

  5. Brad on October 4th, 2008 at 6:21 am #

    I tried this and there were simply “” where the key should be. I wonder if x64 is different? It also says in the text document that it is a sample. How else can I find it?

  6. Allon Maxwell on October 9th, 2008 at 2:40 pm #

    ALAS!!!! …… On my Win XP home OEM CD it does find a key. However it doesn’t seem to be the actual key for the disk. I think it is a sample. When I try bto use it to install a message pops up to say it is an invalid key.

    I checked on a second OEM disk. It has the identical key to the first disk in the unattend.txt file.

    Back to the drawing board!

    Allon

  7. Murugan on October 10th, 2008 at 2:03 am #

    This google is very good, helps us to find out each and everything.

  8. Michael on October 27th, 2008 at 4:43 pm #

    This Tip does NOT work, while the there appears to be a key listed in the i386\unattend.txt file it is NOT a valid one.

    If anyone knows if it possible to get a valid KEY from file on the installation CD please post. I have a an installation disk but CD KEY, the former IT guy never wrote it down anywhere.

  9. Jeff on November 18th, 2008 at 3:01 pm #

    if u still have the ISO do this: open the folder i386 and then open the file winnt.sif . There is located the Serial of any un-attended XP

    • jerikh on October 25th, 2009 at 9:18 pm #

      Hi Jeff, GREAT tip!! This worked on my install CD as well, since my CD did not have the .txt file specified in the article above. You’re a life-saver, thanks so much!

    • Sugar on April 4th, 2010 at 5:25 am #

      THANK YOU!! It works like a charm :)

    • Yosef on April 17th, 2010 at 8:46 pm #

      THANKS!!! It really really works!! Its amazing that I have never seen this anywhere and all of a sudden, this tip has made my life a whole lot easier. THANKS!!

    • Nate on July 12th, 2010 at 12:59 am #

      THANK YOU Jeff! This tip saved me much hassle. Cheers!

    • Katie on July 25th, 2010 at 6:36 am #

      thank you so much!!!!

    • Shach on August 19th, 2010 at 8:23 am #

      I couldn't locate a file called winnt.sif in the i386 directory or anywhere else on the installation disk. Any ideas anyone?

      • lmnop on April 17th, 2011 at 8:33 pm #

        I’m having the same problem; the code in “unattend.txt” is not valid, and same as Shach, there’s no “winnt.sif” file in my i386 folder either… any other options out there?

    • Dan on September 11th, 2010 at 12:18 pm #

      Great tip, thanks. I had the .txt file but the same # as everyone else. 2 years ago I had Dell install XP and the label on the machine is for Vista and does not work. They supplied no documentation for the XP install. This saved me a couple of days.

    • Andale on November 16th, 2011 at 12:07 pm #

      This one actually works!!!
      USE THIS FILE!!

    • Denisa on January 7th, 2012 at 6:48 pm #

      It really works. I couldn’t find the unattend.txt file but it is there in the winnt.sif file. thanks

  10. Traci on November 30th, 2008 at 7:57 pm #

    THIS KEY WILL NOT WORK.
    THIS IS NOT THE WAY TO FIND YOUR KEY ON THE INSTALLATION CD.

  11. Pete on December 11th, 2008 at 7:14 pm #

    This is absolutely amazing, my son lost his instalation key and i thought we where done for.
    Thank You

  12. Sukha on December 14th, 2008 at 1:26 am #

    Hey! That key is wrong. I have 5 windows xp compact disks and unattend.txt folder shows same key for every cd.
    You are wrong!!!

  13. John on December 24th, 2008 at 12:17 am #

    This absolutely worked for me. Probably different versions of windows or what have you. I was installing Windows XP Professional.

  14. kkkk on December 25th, 2008 at 10:10 am #

    i didnt found the i386 and unattented

  15. Alexandre on December 26th, 2008 at 12:36 pm #

    GREAT!!! This tip saved my skin!

  16. Arne on January 12th, 2009 at 4:23 am #

    To confirm: this is *not* a valid key, it’s the “default key” and it is the same for *all* installation CDs of windows.

  17. Stevem on January 18th, 2009 at 6:43 am #

    I rang microsoft support to get a new key. They said 3-5 working days to generate. What a load of crap. I asked them if there was any way to pull the key off the disk. They said no. Got this tip. Worked perfect. Thanks for nothing Microsoft . Nice support

  18. BuddyBear on January 22nd, 2009 at 7:36 pm #

    Worked fine for Me. Great info to know.

  19. drew on January 22nd, 2009 at 10:30 pm #

    i have been stupidly looking al over the web to maybe find a working key. but with your help i found it within seconds and it worked perfectly 100%. thanks

  20. Matt on January 26th, 2009 at 1:39 am #

    This was the best advice I’ve gotten all day!!

  21. keon on January 28th, 2009 at 12:42 pm #

    Hi can you help me to find the product key on a vista installation cd. thanks.

  22. kirkos on January 31st, 2009 at 2:21 pm #

    This wouldn’t work for me either. The key listed on the UNATTEND.txt won’t allow me to install XP.

  23. chris on February 7th, 2009 at 1:11 am #

    If you’re all saying its a sample and they’re all the same, why dont you post the numbers you saw for comparison? Itll save alot of trouble for the people that just have to try it to be sure. If I saw someone else post the same number I saw I wouldnt even attempt to try it… Mine BTW is: “CD87T-HFP4C-V7X7H-8VY68-W7D7M”

    • MS_AGENT on October 3rd, 2009 at 7:26 pm #

      THIS KEY HAS BEEN BLACKLISTED NOW

      • Windows_Engineer on November 3rd, 2009 at 8:21 pm #

        wow ms_agent youve got some real audacity to be a jerk towards people looking for solutions to microsoft’s poor programming. I would like to know if you are even certified, and if so i want your employee number so i can talk to my one of the Execs i have on file a microsoft HQ to have you evaluated

      • randy on October 19th, 2010 at 7:44 am #

        thats funny…black listed…every windows xp disk has that key in it

        • Esmith on December 10th, 2010 at 3:00 pm #

          Randy , Chris, and Windows_Engineer, you guys are smart….
          should have known M’S” has a default P’K’ for every cd o/s software.
          That’s excellent!

    • mik on February 20th, 2010 at 6:40 pm #

      just checked mine is the same number so where is the real one

    • pepe on August 19th, 2010 at 10:19 pm #

      lolololol same key number on mine..dont work!!!!

    • Paulie on September 15th, 2010 at 11:48 am #

      Been searching through lists and lists till this one… Thx!

    • Cholombatalipora on September 17th, 2010 at 9:31 pm #

      This key worked for me. Thank you.

    • H on November 13th, 2010 at 6:04 pm #

      I got some one, that does not work me.NOOOOOOOOOO!!!!

    • Peter on February 2nd, 2011 at 3:15 pm #

      Hey, this one worked for me…it’s a farce activating Windows XP now, I know for a fact, I’ve owned enough laptops, etc. that I’m legally entitled to install Windows XP, and I’m sure so has everyone else…

    • CrunkMommaFunk on September 9th, 2011 at 2:36 am #

      Lucky me, both the unattend.txt and the winnt.sif both give me the “black listed” key, which does not work in my PC “CD87T-HFP4C-V7X7H-8VY68-W7D7M”. Would love to know another way. Could have sworn I scanned my key and kept a jpg of it but not that I can find. :(

    • Dan on December 10th, 2011 at 8:51 am #

      Mine is the same.

  24. Jess on February 9th, 2009 at 3:41 pm #

    EXCELLENT! Had to reinstall from an old disc, which had been separated from the KEY #. Much anguish and $20 saved. (Recovery keys software would have been the “scenic route” to get this.)

  25. Johnny on February 16th, 2009 at 10:18 pm #

    If this method doesn’t work, search the XP disk for a file called winnt.sif
    The product key given there will likely work if the unattend.txt key doesn’t.

    • caiovino on January 23rd, 2010 at 9:33 am #

      unattend.txt didn't work for me, but winnt.sif worked great!

      Thanks!

    • latin on January 6th, 2011 at 7:07 pm #

      D:\I386\winnt.sif

      open the file in notepad

      ProductKey=”???????????????????”

      great tip ;)

      • general hanor on March 17th, 2011 at 12:37 am #

        This is the correct tip to use
        Unattend.txt is a the default key used for temporary install, you still have to validate, where as every legit copy of xp should have a winnit.sif file that is unique. use this.

        Also, booting from CD typically eliminates the headache of having to know your product key (especially if your dealing with a volume licensed copy of xp)

      • masud on June 25th, 2011 at 4:14 am #
    • lady on February 16th, 2011 at 8:19 pm #

      the winnt.sif was the one that worked for me

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