The Sophos shield on the top bar on my Mac is greyed out. I followed the instructions on your website - go into "open preferences", authenticate, and click the "start scanning" button. But it will not switch on. On access scanning remains switched off, and the shield stays grey. I have restarted the computer - no difference.
I have had Sophos for a few months and this is only the 2nd time I received the error message telling me that on access scanning was switched off.
How can I turn it on?
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