You must take ownership and give admin users full control to be able to delete this value.
This section is more important for shared VDAs like RDSH (Windows Server 2008 R2, Windows Server 2012 R2, and Windows Server 2016).
For example, if you allocate 20 GB of RAM to your Remote Desktop Session Host, and if the cache disk is only 15 GB, then Windows will have a default pagefile size of 20 GB, and Provisioning Services will be unable to move it to the cache disk.
This causes Provisioning Services to cache to server instead of caching to your local cache disk (or RAM).
The default permissions allow users to store files on the C: drive in places other than their profile.
If this image will be converted to a Provisioning Services v Disk, then you must ensure the pagefile is smaller than the cache disk.
CTX212439 Desktop Session Stuck in Pre-Logon State with Message “Please wait for the Local Session Manager”: Some environments will not accept the default port 80 for Virtual Delivery Agent registration, even though registration is authenticated and encrypted on port 80. Several people in Citrix Discussions reported the following issue: If you see a message about RD Licensing Grace Period has expired even though RD Licensing is properly configured, see Eric Verdumen No remote Desktop Licence Server availible on RD Session Host server 2012.
When logging in through Citrix I got message “Wait for local session manager” for 20-30 seconds.
When logging in to the server with RDS, I do not have to wait for this.” “Add the following 2 registry keys to your 7.9 VDA server – then try connecting to it using ICA to see if the issue still occurs: Add reg keys in “HKLM\SOFTWARE\Citrix\Group Policy” Dword: “Cache Gpo Expire In Hours” – Value = 5-24 (# of Hours) ***start with value of 5*** Dword: “Gpo Cache Enabled” – Value = 1 Restart the machine after adding these registry keys and attempt an ICA connection (at least twice) to see if that helps the Login delay.” Mark De Palma at Xen App slow logon times, user get black screen for 20 seconds at Citrix Discussions says that pushing Tile Refresh to a background task speeds up logons.
Marvin Neys at Xen App slow logon times, user get black screen for 20 seconds at Citrix Discussions says that deleting HKCU\Software\Microsoft\Windows\Current Version\UFH\SHC at logoff reduces logon times from 40 seconds to 6 seconds.
Connection Threshold Settings lets you set the notification thresholds.
Xen App/Xen Desktop 7.15 includes Adaptive Transport, which uses EDT protocol, which uses UDP Ports 1494/2598 for HDX connections to the VDA.