download dotnet4.5.2 from Microsoft official website.
For InstallRoot error fix registry file create empty txt file and copy the text below to that txt file and afterwards rename .txt to .reg
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework]
"InstallRoot"="C:\\Windows\\Microsoft.NET\\Framework64\\"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\.NETFramework]
"InstallRoot"="C:\\Windows\\Microsoft.NET\\Framework\\"
that's it, enjoy
