HyperV Integration Services: Fatal error during installation

I managed to convince the “powers that be” that we didn’t need to have a dual quad-core server with the capacity for 32GB of RAM to and connectivity to our SAN sitting around doing nothing until they occasionally use it for upgrade testing…  So I did a P2V (Physical to Virtual conversion) and shut down the physical machine.  But when I tried to install the Integration components…  I got “An error has occurred: Fatal error during installation.”  A quick google gave me the below post, and believe it or not.. it worked.  (I didn’t reboot before I installed.)

HyperV Integration Services: Fatal error during installation

Installing Integration Services on HyperV I got the following problem:
"An error has occured: Fatal error during installation."
Delete (or rename) two file on the guest machine
Reboot and reinstall the integration services.

Vittorio Pavesi: HyperV Integration Services: Fatal error during installation

11 Responses to “HyperV Integration Services: Fatal error during installation”

  1. Kevin


    Many thanks

    Works for me too

    Without rebooting 🙂


  2. Paul

    Hey Thanks Man! It worked great! and I did not have to do a reboot. Really saved my bacon on this physical to virtual conversion

  3. Zsolt

    Hell, I like you. You can come over to my house and ____ my sister.
    You saved my day!

    ***Edited for language…

  4. Thomas

    Go grab Zsolt’s sister, I bring the beer.
    It worked 🙂

  5. Ben

    Thanks! This helped a lot.

  6. aditi

    there are no such files on my computer!
    But still whenever i try installing my blackberry the following error appears:
    An error occurred while copying file wdfldr.sys
    Cannot file to destination directory.

    My device can be used as a pendrive where you can copy and paste files on it but it cannot be synced with the desktop manager.
    could anybody please help me!

  7. Tim

    This worked! Thanks for posting it!

  8. HP

    You are a legend. I click on the first google suggesstion which brought me to this site which has saved my life.

    Thank you very much sir 🙂

  9. Armin

    try the following solution (worked for me) if the problem is not related to wdf01000.sys/wdfldr.sys:

    1.Click Start, click Run, type cmd, and then click OK.
    2.At the command prompt, type the following commands, and then press ENTER after each line:
    net stop cryptsvc
    ren %systemroot%\System32\Catroot2 oldcatroot2
    net start cryptsvc


  10. Nathan Phillips

    Thanks, worked great for me! The install replaces those two files with ones of exactly the same date/time as the original. No idea why it couldn’t have just overwritten them without us deleting them first. Anyway, thanks for the info.

  11. Tommy

    Thank you very much!
    It worked excellent!

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