This very well could be. I do know it worked on Windows 10 at one time (have several clients on Windows 10 and it worked fine on multiple versions of 9.3 from September, 2015 -- February, 2016)...but stopped working back in February on version 9.355. I am doing more testing and have found the following: 1.) I have one Windows 10 box that was working and I have never "uninstalled" the client agent. I have installed OVER the client agent when I installed the new 9.4 from scratch. The directory structure on that box under C:\ProgramData\Sophos\Web Control\Policy shows that there is a policy there (there are files in that directory), but it doesn't appear to be updating when I make changes to the web content filter. No Web Control logs are getting to Sophos, however. 2.) I have another Windows 10 box that is brand new. I installed the 9.4 client agent on that box from scratch. The directory structure under C:\ProgramData\Sophos\Web Control\Policy shows nothing. It's almost like the policy can't get into the directory or it isn't updating for some reason? I will try to spin up a Windows 7 box and see if I have the same issues. I do know the Sophos Endpoint Cloud works fine on Windows 10 (tried and installed this and it worked just great), just not the endpoint web control service using the UTM. Another thing I have found... I just downgraded my UTM to 9.351 and I still am experiencing the same issues! Either something changed in Windows 10 that is blocking endpoint web control policy changes or something changed on the Sophos server side and how it communicates with the agent. I'll continue to research!
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