How-to-simply...

IIS: The current identity does not have write access to Temporary ASP.NET Files

  • 1 The current identity (NT AUTHORITY\NETWORK SERVICE) does not have write access to 'C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files'
  • 2 Navigate to %WINDIR%\Microsoft.NET\Framework\v4.0\ and run aspnet_regiis.exe -ga NT AUTHORITY\NETWORK SERVICE
  • 3 Or run aspnet_regiis.exe -i
  • 4 -i installs the framework and registers it with IIS, -ga grants the access permissions for the specified user
  • N Replace NT AUTHORITY with COMPUTER NAME and NETWORK SERVICE with USERNAME