Visual Studio 2015 freezes when i start debugging in C++

Question

i have a big problem. I open visual studio 2015 Community Edition and everything works fine up to the point when I start debugging a code in C++(I press ctrl + f5). Then it freezes and i can't do anything but close it form task manager.I also noticed that when i open older projects and write new code everything works fine , but when i open a new project it freezes when i try to debug it. Here is the error description: Description: A problem caused this program to stop interacting with Windows.

Problem signature:
Problem Event Name: AppHangB1
Application Name:   devenv.exe
Application Version:    14.0.23107.0
Application Timestamp:  559b7ead
Hang Signature: a3e2
Hang Type:  6144
OS Version: 6.1.7601.2.1.0.256.1
Locale ID:  1026
Additional Hang Signature 1:    a3e25b996bfe70578783a093f3f99999
Additional Hang Signature 2:    b946
Additional Hang Signature 3:    b94652f300fc30cb7bed34d10dd50dbf
Additional Hang Signature 4:    a3e2
Additional Hang Signature 5:    a3e25b996bfe70578783a093f3f99999
Additional Hang Signature 6:    b946
Additional Hang Signature 7:    b94652f300fc30cb7bed34d10dd50dbf

I saw some fixes but i have no idea where to put this "Devenv /ResetSettings SettingsFile" (in cmd it does not work and i have no idea where to type it). PLEASE HELP !!!!

Answer 1

To post it as an answer.

Like Hans Passant said: Disable your Antivirus. Avast caused me 3 hours of debugging because of this.