SEP - Firewall is malfunctioning

I've recently logged onto the SEPM Server and noticed that one of the SEP Clients was showing as 'offline'
Upon inspection of the SEP Client I noticed that it had a good amount of 'Error's.
The Errors that were showing were as follows:

Firewall is Disabled
Firewall is Malfunctioning.

It's also clear that when selecting the 'Fix' Button, nothing happens.

If you could please advise RE: this issue it would be greatly appreciated.

Thanks,
F