Connection to Kms Server Failed? Fix It Now

Connection to Kms Server Failed? Fix It Now

Here we can see, “Connection to Kms Server Failed? Fix It Now”

  • Two primary reasons a connection to the KMS server could fail.
  • This post discusses both of them and the immediate solutions to your particular problem.

A failing connection to the KMS server can occasionally cause your work to be interrupted while installing Office on your Windows computer. Here are various remedies for this situation.

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How do I troubleshoot KMS activation issues?

1. Check your Internet connection

    1. Activate the Start Menu.
    2. CMD is typed.
    3. Select Command Prompt twice.
    4. Enter “ping -n 25” in the Command Prompt window.

The internet connection can occasionally be the only reason an error appears. You can move on to the next stage if everything seems to be in order.

2. Upgrade your Windows OS

When your Windows OS isn’t properly licenced, the KMS server frequently experiences functional issues.

Your product will be authentic, reliable, and completely working if it has an original licence. You will also receive frequent updates that eliminate flaws.

Additionally, updating to the newest version of Windows only needs to be done once, so your initial expenditure will end up being profitable.

3. Check if the computer is activated

    1. Open the System control panel on the KMS client.
    2. Windows is activated message search.

We must confirm that Windows is enabled on the client machine before activating your Office copy.

4. Check if you have more than 25 clients

    1. Open the Command Prompt window as an administrator.
    2. To see if the threshold has been reached, run the slmgr.vbs /dli command. The threshold is currently 5 for Server editions and 25 for all other editions.

5. Check the client communicated with the host

Search for event ID 12290 in the Application event log on the KMS host PC. Look for requests from the client machine in this log.

If there were no requests, the client and host could not communicate.

6. Open the right port

    1. Run the Command Prompt as an administrator.
    2. Enter the slmgr.vb /dlv command in the cmd window.
    3. On the port, look for Listening.

Verify that no firewall settings prevent TCP traffic from passing over the KMS port. The port’s default value is 1688. You can discover the port on your host machine if you don’t know it.

7. Configure DNS properly for multiple KMS hosts

    1. Verify that every computer is connected to the same Active Directory Domain Services domain.
    2. Create a global security group in the Active Directory Domain Service.
    3. Include each KMS-running computer in the recently established global security group.
    4. Set the DNS server’s permissions to permit updates from this new group.

The host machine must be able to be found on your local network to use KMS. When the first host computer adds an SRV record to the DNS server, it automatically announces its existence.

If the DNS server is improperly set, the remainder of the hosts cannot modify or update SRC.

8. Newly added computers don’t increase the KMS count

    1. Launch the search window on the client’s computer.
    2. Type cmd.
    3. Run as administrator can be chosen by right-clicking the Command Prompt.
    4. Enter sysprep /generalize in the Command Prompt window to reset the client computer ID. When that fails, try slmgr /rearm.

Sometimes client computers don’t count as distinct since they share a physical appearance with the host.

Finally, according to the published documentation, you can switch to an AD-based activation if you are still experiencing problems.


I hope you found this guide useful. If you’ve got any questions or comments, don’t hesitate to use the shape below.

User Questions

1. How can I fix a failing connection to the KMS server?

Before running the batch files, ensure Windows Update is enabled, and your internet connection is steady. Please open your web browser and try browsing to to see if my KMS servers are banned or not. The presence of the page indicates that the server is not being banned.

2. How can I check the connectivity to my KMS server?

The KMS client computer is turned on. You can either check the Control Panel System or run the SLMgr script in the command prompt to see if the client PC is correctly activated. Run Slmgr to verify. /dli command-line option for vbs.

3. What occurs if the KMS activation timer runs out?

If Windows is unable to reactivate the licence, what happens? After 180 days, a Windows computer will lose its licence if it can’t get in touch with the KMS server once again. It alerts the user to this change and begins a 30-day grace period.

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