Horizon Connection Server License Key Is Invalid Best Jun 2026

Copying a license key from a PDF, email, or Word document often introduces invisible formatting characters, spaces, or line breaks.

4. Active Directory Application Mode (ADAM) Synchronization Failures

Recopy the clean text string and paste it into the Horizon Console. 3. Check Server Time and NTP Synchronization horizon connection server license key is invalid

Extra spaces, missing characters, or lowercase letters copied from a PDF or email can cause validation failures.

Open a command prompt as an Administrator on the failing Connection Server. Run the following command to check replication status: repadmin /showrepl localhost:389 DC=vdi,DC=vmware,DC=int Use code with caution. Copying a license key from a PDF, email,

The internal Horizon LDAP database (ADAM) failed to save or replicate the license string correctly across replica servers. Step-by-Step Troubleshooting Guide Follow these steps in order to resolve the licensing issue. 1. Sanitize and Re-enter the Key

If you are still seeing the error, run through this quick mental checklist: Run the following command to check replication status:

This is a common stumbling block during new deployments, upgrades, or license renewals. Because VMware Horizon has transitioned from perpetual licensing to subscription-based models under Broadcom, the root causes for this error have shifted in recent years.

If a key was deployed via unattended install, you might hit an activation limit. In this case, you must contact support to reset the license key. How to Update the License Key Follow these steps in the Horizon Administration Console to re-enter or update your key: Navigate to Product Licensing and Usage Edit License in the Licensing panel. Enter your new serial number and click If using a subscription model, ensure the Horizon Cloud Connector is synced; if sync fails, perform a Reconfigure operation in the Cloud Connector portal. Troubleshooting Connectivity Errors