Hi,
I’m having some issues concerning Sophos Antivirus for Mac Home Edition. I’m using a 2007 Macbook Pro (15”) and since the update to OSX 10.11 El Capitan, Sophos refuses to load correctly.
Especially, the “On-Access” scanner refuses to start and the shield icon stays grey instead of turning black. After some time, the message "Sophos Anti-Virus is not running" appears.
After deleting the file cache.dat (size 0 kb) in the directory /Library/Caches/com.sophos.sav/ the on-access scanner starts and works as it should. However, after a reboot or after a Sophos Update (once an hour) the process of deleting the file needs to be done over again.
Before hanging, the following is mentioned in Console:
com.apple.xps.launchd: (com.sophos.intercheck) Service exited due to signal: Trace/BPT trap: 5
kernel: Sophos Anti-Virus on-access kext activated
The above message appears every few seconds and keeps looping. It stops when deleting said file above.
I’ve tried the following to resolve the problem:
1. Uninstalled Sophos using the “Remove Sophos Anti-Virus” program in Applications and re-installed using a fresh installer from the Sophos website. This didn’t solve my problem.
2. Completely re-installed Mac OSX 10.11 El Capitan from scratch, using a USB key which I prepared using the following KB article: https://support.apple.com/en-gb/HT201372
After installing from scratch I downloaded and installed Sophos right away. The strange thing is that sophos loads correctly after installing from scratch, but after downloading the first update (159.9 MB package) the above problem returns. This is exactly the same behaviour as before I did the clean install.
3. Completely re-installed using above procedure, after which I disabled system protection, and installed / updated Sophos. unfortunately also to no avail.
Could you please look into this? Thanks in advance!
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