Horizon Connection Server License Key Is Invalid

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. horizon connection server license key is invalid

Conclusion
The “invalid license key” error in Horizon Connection Server is most often due to entry mistakes, version mismatches, or expired licenses. Systematic re-entry, cache clearing, and version verification resolve the majority of cases. For persistent errors, VMware support can validate backend licensing status. Run the following on the Connection Server (as

Run on Connection Server (admin CMD):

vdmadmin.exe -L

Look for: