I know that for a long time avast hasn't been working with windows 10 TP. I decided to try it again today and it works fine. Just thought that I would let everyone know for those of you that care.
I wouldn't use any 3.party AV apps on the TP! Problem is that you'll never know what that AV apps will affect on the OS and the build in AV system from MS is much good enough!
I would just stick with MS for that just like pisthal said. I use MS system endpoint which works perfect and has been from the start.
Antivirus is so ineffective these days anyways. Application whitelisting and anti-exploit tools, along with some OS hardening and a little bit of common sense is the way to go these days.