Horizon Connection Server License Key Is Invalid

Resolving the "Horizon Connection Server License Key is Invalid" Error: A Comprehensive Guide

If you've recently changed your license key, reconfigure it on the Horizon Connection Server.

It is important to note that when a license expires or is flagged as invalid, existing user sessions usually continue to run. However, the Connection Server will block new sessions and management tasks. To fix this quickly, try entering the key directly via the Horizon Console Settings > Licensing . If the UI is locked out, restarting the VMware Horizon Connection Server service

The Fix:

Try entering the key using a different browser or an Incognito/Private window. 5. Check the "vdm.log" If the UI just says "Invalid," the logs will tell you why . Location: C:\ProgramData\VMware\VDM\logs\vdm.log horizon connection server license key is invalid

Root Causes of the Invalid License Error

In Horizon Administrator, confirm you assigned the correct license pool (Concurrent/commercial) to the correct product.
If using per-user/per-device vs concurrent licensing, ensure the license type matches how Horizon counts users.