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Real time protection becomes disabled. Heartbeat not established

Good Morning,

 

Can anyone advise on what would cause real time protection to become disabled? The Real time protections seems to be preventing a laptop to not establish a heartbeat and thus prevent an end user from getting internet access.

 

Environment - Laptop/Dock -> Laptop in Sleep mode.

user comes in, docks laptop, leave it sleeping, comes back 30mins later opens laptop - heartbeat not established and has no network. (Dock has ethernet cable plugged in and laptop detects lan)

We reboot laptop, sign into windows and heartbeat is established.

 

Running a network of 30-40 laptops, and this seems to be only 1 having this particular issue. Everyone else seems to be fine docking their laptop and establishing heartbeat in 1-2mins tops.

Any thoughts? This has occurred multiple times in past month and seems unreasonable to have user reboot laptop every time.

 

Update succeeded Aug 2, 2017 9:39 AM
    Sophos Firewall reported computer resumed sending heartbeat signals Aug 2, 2017 9:38 AM
    Real time protection re-enabled Aug 2, 2017 9:34 AM
    Peripheral allowed: SMI USB DISK USB Device Aug 2, 2017 9:34 AM
    Real time protection disabled Aug 2, 2017 9:34 AM
    Peripheral allowed: Intel(R) Dual Band Wireless-AC 8260 Aug 2, 2017 9:27 AM
    Sophos Firewall reported computer not sending heartbeat signals Aug 2, 2017 9:11 AM
    Peripheral allowed: SMI USB DISK USB Device Aug 2, 2017 9:09 AM
    Peripheral allowed: Intel(R) Dual Band Wireless-AC 8260 Aug 2, 2017 9:09 AM


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