Checking if your kit is complete... Looks good Note (probably harmless): No library found for Psapi.lib Writing Makefile for Win32::EnvProcess Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp lib/Win32/EnvProcess.pm blib\lib\Win32\EnvProcess.pm AutoSplitting blib\lib\Win32\EnvProcess.pm (blib\lib\auto\Win32\EnvProcess) C:\cpanrun\build\5-10-0\bin\perl.exe C:\cpanrun\build\5-10-0\lib\ExtUtils\xsubpp -typemap C:\cpanrun\build\5-10-0\lib\ExtUtils\typemap EnvProcess.xs > EnvProcess.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv EnvProcess.xsc EnvProcess.c cl -c -I. -nologo -GF -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -MD -Zi -DNDEBUG -O1 -DVERSION=\"0.02\" -DXS_VERSION=\"0.02\" "-IC:\cpanrun\build\5-10-0\lib\CORE" EnvProcess.c EnvProcess.c EnvProcess.xs(2) : fatal error C1083: Cannot open include file: 'psapi.h': No such file or directory NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop.