User cannot launch ICA session with "Remote Desktop Services Is Currently Busy" error

User cannot launch ICA session with "Remote Desktop Services Is Currently Busy" error

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Article ID: CTX459728

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Description

User cannot launch ICA session with "Remote Desktop Services Is Currently Busy" error.
The same issue persists even user directly login via RDP or console.
At the same time, there are many ghost sessions in "disconnected" status remaining on Server VDA

Resolution

We can create below registry for the session leak issue:
  • Under "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Kernel"
create a SeTokenDoesNotTrackSessionObject value (it should be a reg REG_DWORD value) and set to 1

 
  • Reboot the server and check if the ghost session issue will be gone.

Problem Cause

Remote Desktop Service currently hang and it cannot re-start as expected 
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