What to do if dotnet 4.0 cannot be installed

Question: What to do if dotnet 4.0 cannot be installed?
Answer: To fix this problem, the user should follow these steps

• Download dotnet cleanup tool: http://product.misa.com.vn/SoftwareTools/Others/dotnetfx_cleanup_tool.zip
• Run this program and select dotnet 4.0 to remove:

• Then reinstall dotnet 4.0

If dotnet framework still cannot be installed, reinstall Windows.