diff --git a/build/_bower.shade b/build/_bower.shade
index 515cea44b9..e9419165ff 100644
--- a/build/_bower.shade
+++ b/build/_bower.shade
@@ -1,8 +1,8 @@
 default currentDir = '${Directory.GetCurrentDirectory()}'
 default nodeDir = '${Path.Combine(currentDir, "bin", "nodejs")}'
 
-var bowerGloballyInstalled = '${TestCommand("bower", "--version")}'
 var bowerInstalled = '${Directory.Exists(Path.Combine(nodeDir, "node_modules", "bower"))}'
+var bowerGloballyInstalled = '${ !bowerInstalled && TestCommand("bower", "--version") }'
 var bowerCmd = '${ bowerGloballyInstalled ? "bower" : Path.Combine(nodeDir, "node_modules", "bower", "bin", "bower") }'
 
 - // Install bower locally if not already installed either globally or locally
diff --git a/build/_grunt.shade b/build/_grunt.shade
index c2e9f8b257..65d8ff4b4e 100644
--- a/build/_grunt.shade
+++ b/build/_grunt.shade
@@ -1,8 +1,8 @@
 default currentDir = '${Directory.GetCurrentDirectory()}'
 default nodeDir = '${Path.Combine(currentDir, "bin", "nodejs")}'
 
-var gruntCliGloballyInstalled = '${TestCommand("grunt", "--version")}'
 var gruntCliInstalled = '${Directory.Exists(Path.Combine(nodeDir, "node_modules", "grunt-cli"))}'
+var gruntCliGloballyInstalled = '${ !gruntCliInstalled && TestCommand("grunt", "--version") }'
 var gruntCmd = '${ gruntCliGloballyInstalled ? "grunt" : Path.Combine(nodeDir, "node_modules", "grunt-cli") }'
 
 -// Install grunt-cli locally
diff --git a/build/_node-install.shade b/build/_node-install.shade
index 94359bb84f..eb8d8051fd 100644
--- a/build/_node-install.shade
+++ b/build/_node-install.shade
@@ -10,7 +10,7 @@ default nodeVer = '0.10.28'
 default npmVer = '1.4.9'
 default nodeExeSha = '628FFD6C3577068C00CEC9F6F897F0EC8F5212D9'
 default nodeInstallDir = '${Path.Combine(binDir, "nodejs")}'
-default nodeGloballyInstalled = '${TestCommand("node" , "--version")}'
+default nodeGloballyInstalled = '${ !Directory.Exists(nodeInstallDir) && TestCommand("node" , "--version") }'
 
 var nodeExe = 'node.exe'
 var npmZip = 'npm-${npmVer}.zip'
diff --git a/build/_node.shade b/build/_node.shade
index acfb908850..1247873e75 100644
--- a/build/_node.shade
+++ b/build/_node.shade
@@ -1,8 +1,9 @@
 default currentDir = '${Directory.GetCurrentDirectory()}'
 default nodeDir = '${Path.Combine(currentDir, "bin", "node")}'
-default nodeGloballyInstalled = '${TestCommand("node", "--version")}'
-
-var nodeExePath = '${ nodeGloballyInstalled ? "node" : Path.Combine(nodeDir, "node.exe") }'
 
 node-install once='installNode'
+
+var nodeExeFile = '${ Path.Combine(nodeDir, "node.exe") }'
+var nodeExePath = '${ File.Exists(nodeExeFile) ? nodeExeFile : "node"  }'
+
 exec program='${nodeExePath}' commandline='${nodeCommand}'
\ No newline at end of file
diff --git a/build/_npm.shade b/build/_npm.shade
index df094054b5..8f885cc5cf 100644
--- a/build/_npm.shade
+++ b/build/_npm.shade
@@ -2,9 +2,10 @@ default currentDir = '${Directory.GetCurrentDirectory()}'
 default nodeDir = '${Path.Combine(currentDir, "bin", "nodejs")}'
 default npmDir = '${currentDir}'
 
-var npmGloballyInstalled = '${TestCommand("npm" , "--version")}'
-var npmCmd = '${ npmGloballyInstalled ? "npm" : Path.Combine(nodeDir, "npm.cmd") }'
-
 node-install once='installNode'
+
+var npmFile = '${ Path.Combine(nodeDir, "npm.cmd") }'
+var npmCmd = '${ File.Exists(npmFile) ? npmFile : "npm" }'
+
 exec program='cmd' commandline='/C ${npmCmd} ${npmCommand}' workingdir='${npmDir}' if='!IsLinux'
-exec program='${npmCmd}' commandline='${npmCommand}' workingdir='${npmDir}' if='IsLinux'
+exec program='${npmCmd}' commandline='${npmCommand}' workingdir='${npmDir}' if='IsLinux'
\ No newline at end of file