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OS X 10.11 Console - kernel Error invalid signature for com.sophos.nke.swi

My Console log is rolling over every 6 to 7 minutes pretty much with 3 messages

com.apple.kext ERROR: invalid signature for com.sophos.nke.swi, will not load

kernel: Kext com.sophos.nke.swi no found for upload request

SMEServiceManager: [SMEServiceManager.m:1541] Unable to load kext 'com.sophos.nke.swi'.

I'm running Home Edition 9.4.0, Threat detection engine 3.61.0. First I uninstalled it using the supplied tool, then reinstalled, same issue

OS X 10.11 late 2012 iMac

not getting the same problem on my MBP also running El Capitan

I'm conversant with the El Capitan related issues, but expect 9.4.0 to be stable.

Any help most welcome



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  • Hi Nick,

    I haven't come across this before, let me look into it for you and let you know what I find.

    -Serra
  • I have the same problem. Running 10.11.4 Beta 1, it gives the same error messages regarding the certificate. Net result is a non-functioning anti-virus, resulting in a security error when building a VPN connection. Sophos is not running.

    15/01/16 11:06:20,491 com.apple.kextd[48]: ERROR: invalid signature for com.sophos.nke.swi, will not load
    15/01/16 10:53:31,000 kernel[0]: Kext com.sophos.nke.swi not found for unload request.
    Running Home Edition version: 9.4.1
    Threat detection engine: 3.63.1
    Threat data: 5.23

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  • I have the same problem. Running 10.11.4 Beta 1, it gives the same error messages regarding the certificate. Net result is a non-functioning anti-virus, resulting in a security error when building a VPN connection. Sophos is not running.

    15/01/16 11:06:20,491 com.apple.kextd[48]: ERROR: invalid signature for com.sophos.nke.swi, will not load
    15/01/16 10:53:31,000 kernel[0]: Kext com.sophos.nke.swi not found for unload request.
    Running Home Edition version: 9.4.1
    Threat detection engine: 3.63.1
    Threat data: 5.23

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