ok so there is a problem when trying to install on Windows 10 Technical Preview its avaible at Microsoft insider program
and it just says this program has compatibility issues on your current version of Windows please wait for compatibility update from the program distributor 
so is this gonna be updated to our needs because we are the Microsoft insiders
hello thecow275 since you are a member of microsoft insider you should know better. Avast 2014 and Avast 2015 are NOT COMPATIBLE with Windows 10 yet. Windows 10 is now at Technology Preview stage where IT pro and techs test it out and microsoft test it out and gets feedback from it pros and techs and where there will be tons of tons of bugs to be discovered and fixed. Read this https://forum.avast.com/index.php?topic=155794.90
So does this mean that any computer running Windows 10 and uses Avast software just has to wait until the update is available?
You are posting in a topic from oktober 2014
No need to wait. I’ve been running avast v2016 and Win10 ever since both were released.
So have many others. Win10 and avast are compatible. 8)
So maybe I need to uninstall and re-install because I am currently receiving the “Unable to start firewall” error. I have tried the repair and reboot steps and still getting the error.
Is any previous used AV removed using that vendors removal tool?