It is most common for Citrix licensing to fail the WMI connectivity.

You can check if it's available for monitoring via Windows Power Shell.

Run in power shell:

((get-wmiobject -namespace "Root/CitrixLicensing" -list) | ? {$_.name -match "Citrix_GT_License_Pool"})

And you should see something like this:

if you get an error or blank line then repairing is needed.