Troubleshoot “connection to KMS server failed” error

Posted by in Computer Tips | Last updated on


I have received a lot of complaint emails saying that they could not activate their program after folowing instructions in my videos. The issues described here are related to an error message they got as below.

The connection to my KMS server failed! Trying to connect to another one… Please wait…
Sorry! Your version is not supported.

There are two main causes of this issue.

1. The cause of client
First of all, please make sure that Windows Update is enabled and your intenret connection is stable. To check if my KMS servers are blocked or not, please open your internet browser then try going to: http://kms8.msguides.com. If the page is visible, it means this server is not blocked.
One other point to note is that you need to run command prompt/batch file with admin rights.

make sure your ran batch file with administrator rights

Otherwise, the connection will be denied by UAC system.

2. The cause of server
Recently I need to do some experiments in the kms7 server so I changed the default KMS port (1688) to another one. And besides, I upgraded CPU and RAM memory on the kms8 server.
Because the number of daily clients is too big and still increasing over time, so the server can also be stuck at times. You can check and see if the server is overloaded or not here: http://status.msguides.com.

If you feel that your problem still hasn’t been fixed yet, just email me at msguides.com@gmail.com.

Troubleshoot “connection to KMS server failed” error
4.3 (21 vote[s])

If you would have any questions or concerns, please leave your comments. I would be glad to explain in more details. Thank you so much for all your feedback and support!


For faster support, please visit here for troubleshooting. Need more help? Please email me at msguides.com@gmail.com

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106 thoughts on “Troubleshoot “connection to KMS server failed” error

  1. Yahya

    sorry i do everything but i field, i think windows Enterprice is not possible to active it in this way ??

    i couldn’t active it

    Reply
  2. Yahya

    i did what u asked me to did, but the key dosnt work?? im stil i cant active windows enterprise evaluation ???

    always give the message( the key not valid )

    Reply
    1. kWong

      Two things:

      Ensure your KMS Host key is licensed for Enterprise. Maybe it’s only licensed for Professional.
      On the client, replace the trial key with the correct KMS client key by typing these commands from an administrative command prompt:
      cscript.exe //nologo %systemroot%\system32\slmgr.vbs /ipk NPPR9-FWDCX-D2C8J-H872K-2YT43

      cscript.exe //nologo %systemroot%\system32\slmgr.vbs /ato

      Note: It’s possible that the trial edition cannot be upgraded to a “real” client. If so, then none of this will work.

      Reply
      1. Viking998

        Oh, I was surprised this one worked! I was about to give up, and all of a sudden… I see activation happend, watermark disappeard! Thank You a LOT!

        Reply
  3. Yahya

    hello
    thx for everything u did for us , have windows 10 Enterprise Evaluation but i failed to active it , i tried all the option u wort it but i couldn’t

    Reply
    1. kWong

      windows 10 Enterprise Evaluation kMS Activation Key – FWDCX-D2C8J-H872K-2YT43

      Top search: 2 ways to activate Windows 10 for FREE without additional software

      Use method One with above KMS Key.

      Done

      Enjoy

      Reply
  4. XBOXHACKER

    [SOLVED]
    I was having trouble with Office 2010 activation. No matter what i did. Ran as admin, disable fire wall, disabled antivirus….nothing worked.

    After digging with Win Event Viewer it seems that the host was directing to a local host EVERY time, 127.0.0.2:1688, and not the MSGuides server! Did some reading on MS about the ospp.vbs. Nothing i did changed the host as needed.

    So I came across a GUI for Key Management Services form MS. It is called Volume Activation Management Tool 2.0 (VAMT) Stated it up, selected Office, right click Activate>KMS. Then manually typed in “kms8.MSguides.com” & port “1688” (kms7.msguides.com did not work here)

    BAM!!!! Worked like a champ!!! 🙂

    Thank you for hosting the KMS server!

    Reply
    1. kWong

      activation must run by admin ID right without restriction and connect internet at the same.

      Firewall setting : allow 1688 port

      Reply
      1. Josh

        I am having the same issue and I see you commenting with “activation must run by admin ID right without restriction and connect internet at the same. Firewall setting: allow 1688 port.” But I don’t really know what that means or what to change to fix that.

        Reply
        1. kWong

          Open Firewall port 1688
          1,Navigate to Control Panel, System and Security and Windows Firewall.
          2,Select Advanced settings and highlight Inbound Rules in the left pane.
          3,Right click Inbound Rules and select New Rule.
          4,Add the port you need to open and click Next.
          5,Add the protocol (TCP or UDP) and the port number into the next window and click Next.
          6,Select Allow the connection in the next window and hit Next.
          7,Select the network type as you see fit and click Next.
          8,Name the rule something meaningful and click Finish.
          You have now opened a firewall port in Windows 10!

          Reply
    1. kWong

      activation must run by admin ID right without restriction and connect internet at the same.

      Firewall setting : allow 1688 port

      Reply
  5. Filipe

    Hi Guang,
    1st of all i wanna thank for ur effort to help us.

    But im not being able to make this work so far.
    when doing by cmd im getting 0xC000022
    Using the bat file is simply not being able to connect to any server and thrn i get the “Sorry! Your version is not supported.” message.
    Im the admin user and both steps did running as admin option.

    Reply
    1. kWong

      ERROR CODE: 0XC000022

      google: Use the System File Checker tool to repair missing or corrupted system files

      fix Windows system first

      then reactivate withe admin right without restriction online.

      Done

      Reply
      1. jerrythewhat

        What do you mean “admin right without restriction and online”? Do you mean to run the cmd/bat file as Administrator and also the KMS server has to not be busy? I have been trying to run the cmd/bat file for a while and it always says “Sorry, your version is not supported!”. Maybe I need to wait a little while until the server is not so busy?

        Reply
  6. w**g

    我在中国大陆,我检查了你的几个网站,都可以登陆,同时我也打开了Windos Update服务,但是还是有
    The connection to my KMS server failed! Trying to connect to another one… Please wait…
    Sorry! Your version is not supported.
    这个问题

    Reply
  7. givi

    I tried both methods (manual and with batch file) but none of them works for me. I have the connection to your server, I run as administrator right but it’s rejected anyway. Any solution?

    Reply
  8. Donald

    try this solution -This will 100% work
    by putting the kms file into the root directory ( C:)
    then run the cmd as administrator then done

    Reply
      1. Akshit Suri

        What does this mean. I have tried all the solutions you have mentioned in your blogs but the KMS server doest connect. Even i opened up an firwall port 1688. still not working. When i run the Command file as administrator it just pops and closes.

        Please help.

        Reply
  9. Enigma

    Now that i’m actually subscribing O365, How do i reset the kms to call default microsoft kms instead of kms8.msguides.com? Thanks for anyone’s help.

    Reply
    1. kWong

      KMS is not run by Microsoft. Microsoft only approve KMS Server to activate Windows and Office etc.

      There are no name Microsoft KMS.

      Reply
  10. Marije

    The connection to my KMS server failed! Trying to connect to another one…
    Please wait…

    What can I do to resolve this issue?
    I run the cmd file as administrator, turned off firewall, have stable internet connection

    Reply
        1. kWong

          Top search: Troubleshoot “connection to KMS server failed” error POST

          See have you get same problem?

          Reply
  11. Stana

    Hi Guang,

    Firstly, a word of appreciation for the effort and work you put in this project, thank you 🙂
    Secondly, despite the fact i have followed the steps carefully and repeatedly, i’m failing to get the activation part going for Microsoft Office 2019, i’m running on Windows 10.

    What i did:
    Installed Microsoft Office 2019 through your website:
    https://msguides.com/microsoft-software-products/office-2019.html

    Then proceeded with the activation part, did all the steps of making the .cmd batch file.
    The issue:
    When running the .cmd batch, like most commenting here i get the message:
    Sorry! Your version is not supported. Please try installing the latest version here: bit.ly/aiomsp

    What i have previously done:
    My internet connection is stable and fast.
    I have verified all previous versions were uninstalled.
    That the .cmd batch file was ran as an administrator.
    That Windows Update is enabled, verified by opening your referenced link:
    http://kms8.msguides.com
    And verified that the server is not overloaded per your advice, and it was not.

    i’m out of ideas what to do next to make it work. If you can spare some time to assist me, i would really appreciate your time.

    Reply
  12. Pzd Mubasher

    i also got this error message
    “The connection to my KMS server failed! Trying to connect to another one… Please wait…
    Sorry! Your version is not supported”
    sir what to do now.i have checked your suggesed two main causes but they are not the case..

    Reply
  13. Abhijit Roy

    The Error showing is this @ 15:35 hrs on 18-March-2019 IST

    The connection to my KMS server failed! Trying to connect to another one…
    Please wait…

    ============================================================================

    The connection to my KMS server failed! Trying to connect to another one…
    Please wait…

    ============================================================================

    The connection to my KMS server failed! Trying to connect to another one…
    Please wait…

    ============================================================================
    Sorry! Your version is not supported.

    Reply
  14. Igor DEICHA

    I tried so hard….and Always the same “Sorry, your version is not suported” Pleas help?
    Your script seems to be perfect, it is realy a big invention. But i was not able to put it to work correctely.
    What did I wrong?
    Thanks if you have time to contest.
    Cordialement
    Igor DEICHA

    Reply
  15. Andy

    I am on a 30 day trial Office 365
    The connection to my KMS server failed! Trying to connect to another one… Please wait…
    Sorry! Your version is not supported.
    Do I need to wait until trial runs out?

    Thank you

    Reply