After upgrading from 7, to activate I have error code: 0xC004F034: I made a search in the web and most part of answer say the same thing: that the error actually depends on MS servers, and the solutions seem are two: a file batch, that I tried and doesn't work, or push and push " activate " in Settings < Update and security till 10 will be activated. Then searching again in the web I find the advice to disable fw and av: I disable all CIS and 10 is activated. But when I enable CIS 10 results again not activated ( I tried several times ). What can I do ? ( please, not: " change CIS ", and anyway not sure that another software have not the same problem ). Naturally, my CIS version is 8.2.0.4674 with Win10 Support.
Try Uninstalling CIS (not just disable) and usnig windows firewall temporally and uninstall Any AV or anti-malware then upgrade to windows 10 and activate it. In a couple of days slowly add back Comodo FW and AV and your other software.
I am not sure about your problem. Like most things CIS it will take time to fix all the various bugs. It's unfortunate, but CIS is still solid. By the way, I am dedicated CIS user on W8.1... atrociously full of bugs.
I wonder: if I enable CIS, on my pc 10 results not activated ? But for Microsoft server ? Not activated too or activated ? This would solve the problem.