Upgraded to Horizon 7.6 last week, since the upgrade, at launching a pool, many of our users are getting "You are not entitled to use this desktop", if they wait a few seconds, click "try again", they can launch the desktop. No changes in the environment other than upgrading Horizon from 7.3.2 to 7.6.0.
Horizon 7.6.0 connection servers
Global Entitlement count: 900
Manual Desktop Pool - Floating
Windows desktop clients (Win7, Win10), thin clients, zero clients.