If you want, tell me your Horizon version, whether you use an internal or remote license server, and any exact error messages and I’ll provide exact commands/log paths and next steps.
(Invoking related search suggestions.)
| 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. | horizon connection server license key is invalid
In Horizon Console → Settings → Product Licensing:
If using multiple Connection Servers, ensure all have same license key applied. If you want, tell me your Horizon version,
Run on Connection Server (admin CMD):
vdmadmin.exe -L
Look for:
If you have a Horizon Standard license but your Connection Server is configured to use features exclusive to Enterprise (e.g., vGPU, App Volumes, Dynamic Environment Manager), the server will reject the key. The server self-audits; if it detects an enabled feature that your license does not cover, it marks the key as invalid.
Horizon uses SSL certificates for inter-service communication. If the Connection Server’s certificate is self-signed, expired, or untrusted by the local operating system, the licensing validation service may fail to authenticate internal API calls, throwing a generic "invalid license" error. In Horizon Console → Settings → Product Licensing
It sounds simple, but it causes hours of wasted troubleshooting.