Unable to print when connected to Sophos SSL VPN

Are they trying to print to a name rather than IP?  

1. Sorry, I don’t understand what you mean? 
   I also forgot to mention that the printer shows offline every time they connect to VPN. 

Are they trying to print to a printer by DNS name or using the IP address of the printer?

i.e., are they printing to something named like... Printer-01 (an example of a printer name), or to the IP address of a printer, 192.168.0.x?

They are trying to Print via name. 

I have split tunnel enabled. The printer goes back online as soon as we disconnect VPN. My VPN subnet is 192.168.4.X and if I try to ping the printer on VPN it gets a response from VPN gateway as Destination not reachable.

They are trying to Print via name. 

I have split tunnel enabled. The printer goes back online as soon as we disconnect VPN. My VPN subnet is 192.168.4.X and if I try to ping the printer on VPN it gets a response from VPN gateway as Destination not reachable.

Do you have a screenshot of the edit of the config?

I also created a rule to allow any user from the VPN group to be able to access the local network in Spain but it still haven't worked. 

Pretty sure your 'Override hostname' should have your internal DNS suffix there.  I cannot reach anything by DNS name through VPN without my internal suffix in there.

May I ask you to explain me how will an internal DNS suffix going to help in reaching out to an external network device which in this case is a printer ? Why is it that on VPN it can reach all other services like https, etc but just not a printer? 

Why would they be accessing an external network device if they are using VPN to access the internal network?  Now I don't understand what you are getting at with this.  The assumption here is that because they use VPN, they are accessing an internal network device.

PJB said:

internal DNS suffix going to help in reaching out to an external network device

Let's clarify:  Are you wishing the VPN users to access a printer inside your network or a printer outside of your network?  Because that statement there doesn't coincide with your original post.  You stated they were on the same subnet.

Sorry, if I wasn’t clear. The VPN users are trying to access a printer outside my network. 

OK so is the VPN on the same subnet and mask as well?  If so, that is most likely the issue with printing and routing will fail because it's looking for a print device on the same subnet.

The VPN is on 192.168.4.X and the printer is on 192.168.1.X