Session is not logged off when launching it from Web Portal and clicking on Logout all button in Web Portal page.
The logoff sessions feature works only with Parallels Client version 15 (and above). Hence, if Web Portal does not know the client version or the version is less than 15, Web Portal is not launching the logoff sessions call to the Parallels client.
- Enable Client Detection in Web Portal administrator page > General Settings > Parallels Clients > Parallels Client Detection.
- Update clients to the latest build (in Client menu bar go to Tools > Options > Check for updates now).