Horizon Connection | Server License Key Is Invalid

An "invalid license" error on a Horizon Connection Server typically stems from version mismatches, expired keys, or technical issues with the certificate used for secure communication. 🛠️ Immediate Quick Fixes

If you need to resolve this immediately, verify these common pitfalls first:

Version Mismatch: Ensure your key matches your major version (e.g., a Horizon 7 key will not work on Horizon 8).

New Format Key: Omnissa (formerly VMware) has updated license formats. Newer versions may require a 35-character key instead of the older 25/29-character versions.

Leading/Trailing Spaces: When copying from a portal, ensure no hidden spaces are included in the text field. 🔍 Root Causes & Solutions 1. License Version & Transition (Omnissa)

Following the transition to Omnissa, many perpetual and term licenses were updated.

60-Day Grace Period: For versions like 2312.2 and 2412, old licenses remain valid for only 60 days post-upgrade. horizon connection server license key is invalid

Portal Update: You may need to log into the Omnissa Customer Connect portal to retrieve an updated format key. 2. TLS Certificate Conflicts

Horizon uses the vdm friendly name on its SSL certificate to validate identity. If this is misconfigured, the licensing service may fail to communicate properly.

Friendly Name: Ensure your active SSL certificate in the Windows Certificate Store has the friendly name vdm (all lowercase).

Private Key: The certificate must have an exportable private key. If it doesn't, the Connection Server cannot decrypt sensitive license data. 3. Subscription & Cloud Sync Issues

If you are using a Subscription license, the error often indicates a sync failure rather than an "invalid" key.

Cloud Connector: Check the health of your Horizon Cloud Connector. If credentials have expired or the connection is blocked, licensing will fail. An "invalid license" error on a Horizon Connection

Reconfigure Sync: Perform a "Reconfigure" operation in the Cloud Connector portal to refresh the connection. 📝 How to Update the License Key Log into the Horizon Console. Navigate to Settings > Product Licensing and Usage. Click Edit License. Enter the new serial number and click OK.

Restart the VMware/Omnissa Horizon Connection Server service to ensure the change propagates. To help you troubleshoot this further, could you tell me:

What version of Horizon are you running (e.g., 7.13, 8.x, 2412)?

Did this error appear immediately after an upgrade or unexpectedly during normal operation?

Are you using a perpetual/term key or a subscription via Cloud Connector? AI responses may include mistakes. Learn more

Solution 1: Check for Version Compatibility

This is the most frequent cause of the "Invalid" error. VMware Horizon license keys are strictly tied to the major version of the software. The Scenario: You recently upgraded your Horizon Connection

• The Scenario: You recently upgraded your Horizon Connection Server from version 2306 to 2406, but you are trying to reuse the license key from the old version.
• The Fix:
  1. Log in to the VMware Customer Connect portal (or the new Broadcom Support portal depending on your entitlement).
  2. Navigate to your license keys.
  3. Ensure the key you have is entitled for the exact major version you have installed. A Horizon 8 key might not work if you are running a specific build that requires a newer entitlement, or if you are trying to use an outdated key on a fresh install.

Pro Tip: If you are on a subscription model, ensure your contract has not lapsed. An expired subscription can sometimes report as "Invalid" rather than "Expired" depending on the build.

Step 5: Fix Time Synchronization

Run the following on the Connection Server (as Admin):

w32tm /resync

Then check the current time against time.nist.gov. If the time is off by more than 5 minutes, correct it and reboot the server.

Step 5 – Apply License via LDAP (Advanced)

If UI fails, use adsi edit to modify: CN=License,CN=Product Licensing,OU=Properties,OU=...
(Note: VMware does not recommend direct editing unless guided by support.)

2. Version Incompatibility Between License and Software

VMware changed its licensing model significantly after Horizon 7.13.

• Legacy Perpetual Licenses (v7.x): These often fail on Horizon 8 because the licensing daemon (VMware LICENSING) expects a new "Subscription" format.
• Evaluation Keys: An expired 60-day evaluation key will trigger this error the moment the clock ticks past the expiration date.

2. Common Causes

| Cause | Description | |-------|-------------| | Typographical error | Incorrect entry of the license key (letters/numbers misread, e.g., 0 vs O, 5 vs S). | | Wrong edition | Key is for Horizon Standard, Advanced, or Enterprise, but server expects a different edition. | | Expired or revoked key | Subscription key expired, or VMware revoked the license (e.g., non-payment, violation). | | License not activated | Key exists but not activated in MyVMware portal. | | VMware Horizon version mismatch | Old license key used with newer Horizon version (e.g., Horizon 7 key on Horizon 8). | | Corrupted license cache | Internal license service holds stale/incorrect data. | | Connection Server in replica group mismatch | Different license keys applied across replica servers. |