https://community.intel.com/t5/Intel-Fortran-Compiler/Project-warning-PRJ0018/m-p/765045#M19637 The environment variable WindowsSdkDir is supposed to be defined by Visual Studio when you build a project. I have seen some cases where it is not.&nbsp; It not being defined might make it difficult to link applications - do you otherwise link successfully?<BR /><BR />If you look at Tools &gt; Options &gt; Intel Visual Fortran &gt; Compilers &gt; x64 &gt; Library Files, you'll see that one of the lines there starts with $(WindowsSdkDir).&nbsp; This is telling the linker where to find the Windows SDK library files. You could delete this line, but I'd expect applications not to link with it missing or not working. Sun, 19 Aug 2012 00:42:07 GMT Steven_L_Intel1 2012-08-19T00:42:07Z https://community.intel.com/t5/Intel-Fortran-Compiler/Project-warning-PRJ0018/m-p/765044#M19636 <P>Hi,<BR /><BR />I create a library using Visual Studio 2008 on Windows 7 with 64bit. <BR />After Build Solution, I have the following message:<BR />Project : warning PRJ0018 : The following environment variables were not found:</P><P>1&gt;$(WindowsSdkDir)<BR />How to solve this problem?<BR />Thanks a lot.<BR /><BR />Mike</P> Sat, 18 Aug 2012 03:44:38 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/Project-warning-PRJ0018/m-p/765044#M19636 Mike896 2012-08-18T03:44:38Z https://community.intel.com/t5/Intel-Fortran-Compiler/Project-warning-PRJ0018/m-p/765045#M19637 The environment variable WindowsSdkDir is supposed to be defined by Visual Studio when you build a project. I have seen some cases where it is not.&nbsp; It not being defined might make it difficult to link applications - do you otherwise link successfully?<BR /><BR />If you look at Tools &gt; Options &gt; Intel Visual Fortran &gt; Compilers &gt; x64 &gt; Library Files, you'll see that one of the lines there starts with $(WindowsSdkDir).&nbsp; This is telling the linker where to find the Windows SDK library files. You could delete this line, but I'd expect applications not to link with it missing or not working. Sun, 19 Aug 2012 00:42:07 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/Project-warning-PRJ0018/m-p/765045#M19637 Steven_L_Intel1 2012-08-19T00:42:07Z