Compiler Error Message: CS0016: Could not write to output file 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\xxx' -- 'Access is denied. ' | CodeAsp.Net

While working with one my sites in IIS on my local machine I was getting the following message:

Compiler Error Message: CS0016: Could not write to output file 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\xx' -- 'Access is denied. '

In order to deal with the above issue, I did the following steps:

• Cleaned the "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files" folder
• Gave Full permissions to IIS_IUSRS group 
• Gave Full permissions to "Everone"
• Ran the following command too: %windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis -i

But none of these actions solved my issue. Finally, I went to "C:\Windows\Temp" folder and give Full permissions to IIS_IUSRS group and that did the work: