SNTPService.exe (sophos network threat protection service) with high memory usage

Question

Hello Community, 
 I have a computer that sophos network threat protection service is always growing up in memory until it crash the main application that was running on it. 
 the process is called: SNTPSERVICE.EXE 
 I uninstalled Sophos, restarted and reinstalled it but still the same. It is now consuming 4gbits of RAM memory. 
 Sophos Endpoint Security and Control version 10.7 
 Windows 7 64Bits 
 
 In my Sophos Console, I can see an Error dated from 01/29/2018 that says : 
 The on-access driver was unable to create an impresonation token for file \Device\HarddiskVolume2\Users\****\AppData\Local\Temp\OLKEDFD.tmp. [0xe3d000f] 
 
 Any ideas?

QC · Accepted Answer

Hello GCCA , 
 off the top of my head this is something Support should look into. How fast it is growing? Anything unusual about or in the NTP log? Oh and BTW, n cases like this one the minor SAV version is equally important - not just 10.7 but 10.7.2 or 10.7.6, and ideally all available sophostications [sorry, couldn't resist] of the version number. The SAV error is "just" a consequence of the apparent memory depletion. 
 Christian