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On-access scanning disabled itself, will not allow me to turn it back on; on-demand scan not working

Hello and thank you in advance to anyone who can help me.  I have two issues:

(1) On-access scanning turned itself off and I am not able to turn it back on.  When I clicked on the button next to "the on-access scanner is off", it just says "Start scanning" and is greyed.

(2) When I try to do an on-demand scan, it scans for less than a second and stops.  Message says no threats but "issues detected".

Here is a log I came across if this helps:

Sophos Anti-Virus
Product version: 9.2.7
Copyright Copyright 1993-2012 Sophos Ltd. All rights reserved.

Scan name: "Scan Local Drives"
Scan items:
Configuration:
    Scan inside archives and compressed files: Yes
    Automatically clean up threats: Yes
    Action on infected files: Delete
    Live Protection enabled: Yes

Scan started at 2015-08-07 15:38:45 -0400

New volume detected at /
Unable to initialize threat detection engine: virus data missing or unusable.

Scan stopped at 2015-08-07 15:38:45 -0400.

:1021535


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Parents
  • Bob,

    I'm having the same problem as Suzanne. Is the step you've suggested the best fix, or will Sophos release an update soon to fix the problem? I've also uninstalled and reinstalled, with the only sign of progress being that the system scan works. Sophos still greyed out and "on-access scanning" is disabled, much to my dismay.

    I'm not sure I have 100% confidence in putting a code into Terminal that could erase/impact data on my new Macbook.

    Thanks,

    Lauren

    :1021541
Reply
  • Bob,

    I'm having the same problem as Suzanne. Is the step you've suggested the best fix, or will Sophos release an update soon to fix the problem? I've also uninstalled and reinstalled, with the only sign of progress being that the system scan works. Sophos still greyed out and "on-access scanning" is disabled, much to my dismay.

    I'm not sure I have 100% confidence in putting a code into Terminal that could erase/impact data on my new Macbook.

    Thanks,

    Lauren

    :1021541
Children
  • Hi Lauren,

    Sorry about the slow reply on this. As long as you are careful when you copy / paste the command that Bob provided, it won't erase anything from your Mac.

    That said, the uninstall / reinstall should have accomplished the same thing, so I'm not sure why you're still having the same problem.