Add the registry keys below to your endpoints or images where you have Citrix Receiver Installed. This should help improve authentication times when launching Receiver.
32 bit
REG ADD HKLM\SOFTWARE\Citrix\Dazzle /f /v InitialRefreshMinMs /t REG_SZ /d 1
REG ADD HKLM\SOFTWARE\Citrix\Dazzle /f /v InitialRefreshMaxMs /t REG_SZ /d 1
64 bit
REG ADD HKLM\SOFTWARE\Wow6432Node\Citrix\Dazzle /f /v InitialRefreshMinMs /t REG_SZ /d 1
REG ADD HKLM\SOFTWARE\Wow6432Node\Citrix\Dazzle /f /v InitialRefreshMaxMs /t REG_SZ /d 1
