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Sophos Antivirus is not running

Sophos version 9.4.0

OS X Yosemite (Mac Mini).

I keep getting this error message.  I cannot get the on-demand scanner to run.  I had an HDD crash a week or so ago and ever since I rebuilt the system with a fresh install of OS X, the Sophos on-demand scanner will not run and I keep getting the error popup "Sophos Antivirus is not running."  It works if I uninstall/reinstall...but then it quits working as soon as it updates.  I've done this process many times, which is the definition of insanity because each time I expect it to finally work.  

I can go delete the 0kb dat file, but the next time the app updates, the problem re-occurs.

Am I missing something?

I have an iMac running the same version of OS X, same version of Sophos Home and it does not have an issue.  I am at a loss as to what is causing the issue on my Mini.



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  • Is there any update to this problem? I've been reading different threads on here and it appears this issue has been going on for a month or so now with no update or any idea as to what may be causing the problem. I have an iMac that is running 9.4.0 just fine, but I have been running Sophos on it since day 1. Started out with Mountain Lion (10.8) in 2013 and then updated to Yosemite and Sophos just kept doing auto-updates.

    I had Sophos running fine on my Mini until my HDD crashed. Did a fresh reinstall of ML and then did the update straight to Yosemite (10.10) before doing anything else. Installed Sophos after the Yosemite update and it won't run unless I keep going in and deleting /library/caches/com.sophos.sav/cache.dat.

    Anything I can do to help or give further information? I'm not sure what the difference is between the two systems and why one works and the other doesn't if they're both running the same OS version and same Sophos version.
  • Hi Steve,

    Sorry to hear you're having trouble with this, and for the slow reply.

    I'm curious, are there any errors in the Sophos Antivirus Log?

    Also, since you mentioned Sophos Home - maybe you could try installing Sophos Home on the Mini as well? I know it's not an elegant fix, but might save you some frustration.

    Cheers,
    Serra
  • I have the same version of Sophos on both computers. I'm not sure what "Sophos Home" is that you're referring to. Both machines have "Sophos Anti Virus Home Edition version 9.4.0" installed.

    Both machines have "Threat detection engine 3.61.0" and "Threat data 5.21."

    The iMac works, the Mini doesn't.
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  • I have the same version of Sophos on both computers. I'm not sure what "Sophos Home" is that you're referring to. Both machines have "Sophos Anti Virus Home Edition version 9.4.0" installed.

    Both machines have "Threat detection engine 3.61.0" and "Threat data 5.21."

    The iMac works, the Mini doesn't.
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