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Error accessing a .cs file in C:\Windows\Temp


Sometimes, users get an error that a .cs file with a name like C:\Windows\Temp\aec23fg45.cs cannot be accessed.
.NET framework generate serialization classes in %windir%\Temp.
On Vista and Windows Server 2008, the IIS_IUSRS group has modify permissions on this directory, but on
  • Windows XP, the ASPNET user does not have permissions,
  • Widnows Server 2003, the IIS_WPG group does not have permissions either.
    This is fixed and our setup now adds the required permissions.