diff --git a/setup/install_craft.ps1 b/setup/install_craft.ps1
index 541b4bd1d..60d300428 100755
--- a/setup/install_craft.ps1
+++ b/setup/install_craft.ps1
@@ -1,143 +1,144 @@
 param(
     [alias("root")][string]$Script:installRoot=$null,
     [alias("python")][string]$Script:python=$null,
     [alias("branch")][string]$Script:branch="master"
     )
 
-
+[Net.ServicePointManager]::SecurityProtocol = "SystemDefault, tls12, tls11"
 [version]$minPythonVersion = 3.6
 $Script:PythonInstallDir = "C:\python36"
 if($env:PROCESSOR_ARCHITECTURE.contains("64"))
 {
-    $Script:pythonUrl = "https://www.python.org/ftp/python/3.6.2/python-3.6.2-amd64.exe"
+    $Script:pythonUrl = "https://www.python.org/ftp/python/3.6.6/python-3.6.6-amd64.exe"
 }
 else
 {
-    $Script:pythonUrl = "https://www.python.org/ftp/python/3.6.2/python-3.6.2.exe"
+    $Script:pythonUrl = "https://www.python.org/ftp/python/3.6.6/python-3.6.6.exe"
 }
 #####
 $Script:pythonVersion = "0"
 
 function findPython([string] $name)
 {
     $py = (Get-Command $name -ErrorAction SilentlyContinue)
     if ($py -and ($py | Get-Member Version) -and $py.Version -ge $minPythonVersion) {
         return $py.Source
     }
     return $null
 }
 
 function FetchPython()
 {
     switch($host.UI.PromptForChoice("Get python", "Do you want us to install python for you or do you want to manually specify the location of your python installation?",
          @("&Install Python", "&Specify Installation", "&Quit"),
         0))
         {
             0 {
                 $archive = "$Script:installRoot\download\{0}" -f ( $Script:pythonUrl.SubString($Script:pythonUrl.LastIndexOf("/")+1))
                 if(!(Test-Path -Path $archive))
                 {
-                    Invoke-WebRequest $Script:pythonUrl -OutFile $archive
+                    Write-Host "Downloading:" $Script:pythonUrl
+                    (new-object net.webclient).DownloadFile("$Script:pythonUrl", "$archive")
                 }
                 [string[]]$command = @("/quiet", "InstallAllUsers=0", "PrependPath=1", "TargetDir=`"$Script:PythonInstallDir`"", "AssociateFiles=0",  "InstallLauncherAllUsers=0")
                 Write-Host "$archive" $command
                 & "$archive" $command
                 $Script:python = "$Script:PythonInstallDir\python.exe"
                 break
             }
             1 {
                 $Script:python = Read-Host -Prompt "Python Path"
                 if(!($Script:python.EndsWith(".exe")))
                 {
                     $Script:python = "$Script:python\python.exe"
                 }
                 TestAndFetchPython
                 break
             }
             2 {
                 exit
             }
         }
 }
 
 function TestAndFetchPython()
 {
     if($Script:python)
     {
         if(($Script:python -split "\r\n").Length -eq 1)
         {
             Try {
                 (& "$Script:python" "--version" 2>&1) -match "\d.\d.\d" | Out-Null
                 $Script:pythonVersion = $Matches[0]
                 if([version]$Script:pythonVersion -ge $minPythonVersion)
                 {
                     return
                 }
                 Write-Host "We found $Script:python version $Script:pythonVersion which is to old."
             }
             Catch {
                 Write-Host "We failed to determine your python version."
             }
         }
         else
         {
             Write-Host "We failed to determine your python version."
         }
     }
     else
     {
         Write-Host "We couldn't find python."
     }
     FetchPython
 }
 ####################################################
 # Start
 Write-Host "Start to boostrap Craft."
 function promptInstallRoot()
 {
     Write-Host "Where to you want us to install Craft"
     $Script:installRoot="C:\CraftRoot\"
     $Script:installRoot = if (($result = Read-Host "Craft install root: [$Script:installRoot]") -eq '') {$Script:installRoot} else {$result}
 }
 
 if (!$Script:installRoot) {
     promptInstallRoot
 }
 
 while(Test-Path -Path $Script:installRoot\*){
     Write-Host "Directory $Script:installRoot already exists.`nChoose one of the options:"
 	switch($ask=Read-Host "[Q] Quit installation    `n[Y] Truncate directory: [$Script:installRoot] and continue installation in the same directory    `n[N] Change directory path.`n(default is 'Q')")
 	{
 		"y"		{rm $Script:installRoot\* -Force}
 		"n"		{promptInstallRoot}
 		"q"		{exit}
 	}
 }
 
 mkdir $Script:installRoot -Force | Out-Null
 mkdir $Script:installRoot\download -Force | Out-Null
 
 if (!$Script:python) {
     $Script:python = findPython("python")
     if (!$Script:python) {
         $py = (Get-Command py -ErrorAction SilentlyContinue).Name
         if ($py) {
             $Script:python = findPython(&$py -3 -c "import sys; print(sys.executable)")
         }
         if (!$Script:python) {
             $Script:python=(where.exe python 2>$null)
         }
     }
     TestAndFetchPython
 }
 &{
 $url = "https://raw.githubusercontent.com/KDE/craft/$Script:branch/setup/CraftBootstrap.py"
 Write-Host "Downloading:" $url
 (new-object net.webclient).DownloadFile("$url", "$Script:installRoot\download\CraftBootstrap.py")
 
 Start-Sleep -s 10
 [string[]]$command = @("$Script:installRoot\download\CraftBootstrap.py", "--prefix", "$Script:installRoot", "--branch", "$Script:branch")
 Write-Host "$Script:python" $command
 & "$Script:python" $command
 cd $Script:installRoot
 }