Are there any problems with avast in windows 10 single answer since I am not a specialist yes or no? If possible, 
W10 is not yet released to the public.
That means no definite answer can be given at this time.
Next time, please (re)search before posting.
There is already a lot of information about it on this webboard, the avast website and other places.
Avast blog … posted many times
https://blog.avast.com/2015/06/03/latest-versions-of-avast-compatible-with-windows-10/