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I receive a ‘’Machine Identification Is Invalid For Current License’’ when attempting to activate my license

Symptoms:

  • When attempting to activate my Unity License I receive a ‘’Machine Identification Is Invalid For Current License’’ error.

Cause:

Normally a ‘’Machine Identification Is Invalid For Current License’’ error means you need to clear your existing Licensing files. These can cause the Editor to hang upon reactivation.

Resolution:

To clear your existing license file, please follow the below steps  (The files may be hidden).

1. Uninstall Unity

2. Delete this file:

* WinXP/Vista: C:/Documents and Settings/All Users/Application Data/Pace Anti-Piracy/License Files

* Win7: C:/ProgramData/PACE Anti-Piracy/License Files

* Mac: HD/Library/Application Support/PACE Anti-Piracy/License Files

and

* Windows: C:ProgramData/Unity

* Mac: Library/Application Support/Unity

3. Restart

4. Download Unity again from our website, since your original installation might be corrupt.

https://unity3d.com/get-unity/download/archive

5. Reinstall and test

More Information:

I have just updated/installed a new Operating System. Why is my license failing to activate?

I am seeing the error 'Your Serial is Invalid' when activating through the Unity Hub. What does this mean?

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26 Comments

  • 7
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    Markus Lanxinger

    this issue just started this past week and now we cannot get past it anymore. already did a complete uninstall, deleted the program data directory, rebooted. still getting this message.

  • 5
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    Roman Nepsinsky

    For us it started today. We are unable to use our Unity Plus license (valid till July 2020 and running on the very same machine with no changes), and even Unity Personal license does not work! Deleting all the license files from ProgramData/Unity and PACE doesn't help, license files are recreated but the same message about invalid maching identification persists.

  • 0
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    jose samuel

    Si es verdad es horrible no poder usar y yo que recién quería empezar con esto de desarrollo de Vídeo juegos que mala onda 

  • 1
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    CarterH

    I followed this and then some but my unity personal license still doesn't work. 

  • 2
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    Hakan Nehir

    I followed these steps and tried several times but no luck. This is how sad, that you can't implement a proper license server/algorithm for a problem has been there for many years. I wasted my precious time waiting response from support. But still no answer. I am sure they will reply me with the lines above. There is no need to be so intense about hardware/software changes in order to verify the license. 

  • 0
    Avatar
    CarterH

    Hakan Nehir, 

    Have you figured out a solution yet? 

     

  • 0
    Avatar
    Hakan Nehir

    No not yet. I uninstalled everything, deleted all registry values. Removed activation from unity website but nothing changes. Also I made a manual activation while trying. No it can't be removed, it is another problem though.

  • 0
    Avatar
    CarterH

    I have deleted everything also and have hand gone through the ULF. but the ULF keeps getting changed to the incorrect machine ID everytime unity hub starts up. I have one last thing to try and that's booting it up connected over ethernet 

  • 2
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    Francisco Pablo Vargas

    Im having this issue right now, Im in a fresh install of windows and unity, I dont know what to do.

  • 2
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    Markus Lanxinger

    cannot believe the silence on this by Unity. luckily there is still Unreal Engine ... 

  • 0
    Avatar
    Hakan Nehir

    FYI, resetting windows and making a fresh install solved the problem.I tried tens of other ways and none of them worked. I need to re-install some apps for a while but finally I will continue to work again.

     

  • 0
    Avatar
    Martin Vaupell Christensen

    Issues started today 22 april..    

    Resolution:   IS NOT WORKING!!!

    WTH Unity.. 

    Edited by Martin Vaupell Christensen
  • 0
    Avatar
    Francisco Pablo Vargas

    I solved the issue! I just installed a legacy version of the hub that I found in this forum post https://forum.unity.com/threads/old-version-of-unity-hub.620128/ and it worked.

  • 0
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    Aulia Nuril Ardhi

    Changing Unity Hub from the newest one to 2.0.4 version is working. 

  • 0
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    Roman Nepsinsky

    I confirm, downgrading to Unity Hub 2.0.4 works both for Personal and Plus license!
    Good job!

  • 0
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    Marvin

    The same error occurred while updating Unity 5.6.3 to Unity2019.3.11. A solution could not be given until Unity 5.6.3 was installed in the installation path due to defects proposed by the Unity installation wizard and then Unity2019.3.11 was installed in the root path of my PC, and voila, no more problems with the license. 

    Edited by Marvin
  • 0
    Avatar
    Unity AJ_KR

    Hi there, 

    Thanks for your comment on this.

    I am sorry to hear you're having trouble with this activation error. In order to try and resolve this, would you mind following the advice below?

    I appreciate that you may have already followed some of these steps, but please follow the guide below in the order that they are written, to ensure the process works for you.

    1 - Uninstall Unity from your machine entirely. (Both the Hub and any version of the Editor you have)

    2 - Delete your .ULF files

    You can find these files by following either of these file paths, depending on your operating system:

    • Windows: C:ProgramData/Unity
    • Mac: Library/Application Support/Unity


    3 - Restart your machine (do not skip this step)

    4 - Once up and running again, disable any superfluous network adapters (If you are plugged in via ethernet, disable your WIFI connection)

    5 - Re-download the Unity Hub to your machine.

    You can visit the Unity download archive by visiting this link: https://unity3d.com/get-unity/download/archive

    6 - After the reinstall, launch the Hub with Admin Permissions (Windows only)

    1. Right click the Hub icon
    2. Click 'Run as administrator'


    7 - Activate your license

    1. Click the cog icon in the top right corner
    2. Click 'License Management' 
    3. Click 'Activate New License' button
    4. Select Unity Personal
    5. Click 'Done' 


    After following these steps and if you're still having trouble, please reach out to us via support@unity3d.com

    Edited by Unity AJ_KR
  • 0
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    Ludwig

    Just try a "Windows in-place update" and in case you are using some "killer network" drivers; Get rid of them. That fixed it for me!!

  • 0
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    Unity AJ_KR

    Hi Ludwig, 

    Thanks for your comment and solution :) 

    Dear users.

    Please find the more information from below video if you want to try "Window in-place update" : https://www.youtube.com/watch?v=9BWh0YRmnT8

    I hope it helps. 

  • 0
    Avatar
    crazy creeper 35

    Ya tengo la solución, esto no funciona, lo que debe hacer es ir a este enlace y descargar la versión anterior durante mucho tiempo y luego lo dejaré:
    https://unity.uptodown.com/windows /descargar

  • 0
    Avatar
    crazy creeper 35

    a mucho tiempo me refiero a la version 2.2.2

  • 0
    Avatar
    Rory

    Hola Crazy creeper 35,

    Gracias por su comentario y solución. 

  • 1
    Avatar
    Gabe Bell

    I figured out the fix. I just made a video tutorial that shows how to fix it. Because deleting the file and restarting never did a thing for me. I am currently exporting it and will send a link after it uploads to YouTube.

  • 2
    Avatar
    Gabe Bell
  • 1
    Avatar
    Unity AJ_KR

    Hi Gabe, 

    Thanks for the comment. 

    Dear users,

    If you cannot fix this issue with above suggestion, please try with manual activation by following this video : https://youtu.be/mLjHHTryBEY

  • 0
    Avatar
    Tyler Hughes

    What seems to work best for me is to open up task manager and end task anything to do with unity. Then open the unity icon and reactivate your licence. It should then work.

     

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