Sophos 10.1.4 Big Sur com.sophos.endpoint.networkextension High CPU

I very recently upgraded the laptop given to me by my employer from Catalina to Big Sur. The next day I started having network connectivity issues. The network would appear connected in System Preferences but no traffic would occur. I rebooted my machine 3 times that day to clear the problem. I contacted my employer's help desk and they suggested resetting the SMC which I did several times but that made no difference. Finally, I noticed in Activity Monitor that when the network stopped working com.sophos.endpoint.networkextension was using 100% CPU or more. I then performed a kill -9 on that process and the network instantly came back to life. The problem is that sometimes the process will restart and go back to using 100% CPU and kill the network again while other times it may be OK for several hours. In any case I am finding I have to kill the process at least a half a dozen times a day.

I noticed that a similar problem was reported during the EAP period for 10.0.3 but supposedly it was fixed.

Is anyone else experiencing this? Any ideas as to what might cause it?

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  • Same issue here. Big Sur 11.6, latest 10.1.4 version of endpoint using Sophos Central. Device is a Intel i9 16" macbook pro. High CPU, and killing the battery when not connected with a matter of 30mins - 1hr. Nothing else is running except standard OS processes and Sophos

  • Is it also preventing network access when this is happening? For me, I could consistently make this happen when visiting news sites - especially foxnews.com in Chrome. However, I have found that by using Safari for these sites the problem has all but disappeared. Note that this happens in the enterprise version of Sophos though my employer. I also have the home version on an almost identical MacBook Pro for personal use and have never seen this problem on that machine.

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  • Is it also preventing network access when this is happening? For me, I could consistently make this happen when visiting news sites - especially foxnews.com in Chrome. However, I have found that by using Safari for these sites the problem has all but disappeared. Note that this happens in the enterprise version of Sophos though my employer. I also have the home version on an almost identical MacBook Pro for personal use and have never seen this problem on that machine.

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