The users are not able to reconnect to the disconnected session. Citrix Online Plug-in might keep trying to start the virtual desktop indefinitely.
When the user disconnects a session, Virtual Delivery Agent (VDA) locks the computer for security reasons. At the time of enabling the Remove Lock Computer policy, the VDA fails to lock the system when the session disconnects.
To validate if the Remove Lock Computer policy is enabled with Local Group Policy Editor, verify User Configuration > Administrative Templates > System > Ctrl-Alt-Del Options > Remove Lock Computer is Enabled.
If the user enables Remove Lock Computer, the REG_DWORD value DisableLockWorkstation is configured with the value of 1.
Caution! Refer to the Disclaimer at the end of this article before using Registry Editor.
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
Name: DisableLockWorkstation
Type: REG_DWORD
Data: 1
To resolve this issue, disable the Remove Lock Computer policy on virtual desktops.