Pattern update and Synchronization not working after SFOS 16.05.4 MR-4 update

Question

Dear 
 I have today upgraded Our Sophos Xg VM SFOS 16.05.3 MR-3 to MR-4 but after that update Pattern update and Synchronization not working giving error. 
 With Warm And Best Regards, 
 Vishvas

sachingurung · Answer

Hi Vishvas, 
 First, Verify the time settings on the XG appliance. Now, take SSH to the XG and go to the option, 5. Device Management > 3. Advance console. Execute, the below command and then do a manual pattern update from Back & Firmware | Patterns | Update patterns now. 
 cd /log 
 tail -f u2d.log 
 Follow the same steps and check the licensing.log after doing a manual synchronize on the XG device. DM me the captured logs to investigate further. Finally, show me an output of "ping 8.8.8.8" and "nslookup sophos.com" from the advance console. 
 Thanks