Watch for the WIN 10 download and notice the relief we have put in place. If you are a Jupiter subscriber, the Win 10 download won’t count against your allowance. If you are a Spaceway-Gen 4 subscriber, we are adding 4GB to your monthly allowance for a limited period to allow for the Win 10 download.
Here is a list of Win10 compatible security products:
http://www.av-comparatives.org/windows-10-approved-products/
There are always "hitches" in computerdom.
There is the following notice at the bottom of my linked page:
If you should find any issues with an approved product which appear to be related to Windows 10 compatibility, please send us an e-mail describing the problem in detail. We will then notify the respective vendors and recheck
I would suggest passing on any issues that pop up so they can be passed to the software vendors.