diff --git a/appveyor.yml b/appveyor.yml
index 9ce7c30216..2eceae7483 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -42,7 +42,7 @@ test_script:
       $env:FullOutput = Split-Path -Parent (Get-PSOutput -Options (New-PSOptions -FullCLR))
       Write-Host -Foreground Green 'Run FullCLR tests'
       $testResultsFileFullCLR = "$pwd\TestsResults.FullCLR.xml"
-      Start-DevPowerShell -NoNewWindow -ArgumentList '-noprofile', '-noninteractive' -Command "Invoke-Pester test/fullCLR -ExcludeTag 'Slow' -OutputFormat NUnitXml -OutputFile $testResultsFileFullCLR"
+      Start-DevPowerShell -FullCLR -NoNewWindow -ArgumentList '-noprofile', '-noninteractive' -Command "Invoke-Pester test/fullCLR -ExcludeTag 'Slow' -OutputFormat NUnitXml -OutputFile $testResultsFileFullCLR"
       (New-Object 'System.Net.WebClient').UploadFile("https://ci.appveyor.com/api/testresults/nunit/$($env:APPVEYOR_JOB_ID)", (Resolve-Path $testResultsFileFullCLR))
       #
       # Fail the build, if tests failed
diff --git a/build.psm1 b/build.psm1
index bf4eaf4088..519fde4265 100644
--- a/build.psm1
+++ b/build.psm1
@@ -884,16 +884,23 @@ function Publish-NuGetFeed
 
 function Start-DevPowerShell {
     param(
+        [switch]$FullCLR,
         [switch]$ZapDisable,
         [string[]]$ArgumentList = '',
         [switch]$LoadProfile,
-        [string]$binDir = (Split-Path (New-PSOptions -FullCLR).Output),
+        [string]$binDir = (Split-Path (New-PSOptions -FullCLR:$FullCLR).Output),
         [switch]$NoNewWindow,
         [string]$Command,
         [switch]$KeepPSModulePath
     )
 
     try {
+        if ((-not $NoNewWindow) -and ($IsCoreCLR))
+        {
+            Write-Warning "Start-DevPowerShell -NoNewWindow is currently implied in PowerShellCore edition https://github.com/PowerShell/PowerShell/issues/1543"
+            $NoNewWindow = $true
+        }
+
         if (-not $LoadProfile) {
             $ArgumentList = @('-noprofile') + $ArgumentList
         }
@@ -918,7 +925,7 @@ function Start-DevPowerShell {
             $env:COMPLUS_ZapDisable = 1
         }
 
-        if (-not (Test-Path $binDir\powershell.exe.config)) {
+        if ($FullCLR -and (-not (Test-Path $binDir\powershell.exe.config))) {
             $configContents = @"
 <?xml version="1.0" encoding="utf-8" ?>
 <configuration>
@@ -932,7 +939,7 @@ function Start-DevPowerShell {
 
         # splatting for the win
         $startProcessArgs = @{
-            FilePath = "$binDir\powershell.exe"
+            FilePath = "$binDir\powershell"
             ArgumentList = "$ArgumentList"
         }
 
diff --git a/docs/building/windows-full.md b/docs/building/windows-full.md
index f9c7e23fcf..6a07e257e7 100644
--- a/docs/building/windows-full.md
+++ b/docs/building/windows-full.md
@@ -92,20 +92,20 @@ Assembly Cache (GAC), not your output directory.
 Use `Start-DevPowerShell` helper funciton, to workaround it with `$env:DEVPATH`
 
 ```powershell
-Start-DevPowerShell
+Start-DevPowerShell -FullCLR
 ```
 
 This command has a reasonable default to run `powershell.exe` from the build output folder.
 If you are building an unusual configuration (i.e. not `Debug`), you can explicitly specify path to the bin directory
 
 ```powershell
-Start-DevPowerShell -binDir .\src\Microsoft.PowerShell.ConsoleHost\bin\Debug\net451
+Start-DevPowerShell -FullCLR -binDir .\src\Microsoft.PowerShell.ConsoleHost\bin\Debug\net451
 ```
 
 Or more programmatically:
 
 ```powershell
-Start-DevPowerShell -binDir (Split-Path -Parent (Get-PSOutput))
+Start-DevPowerShell -FullCLR -binDir (Split-Path -Parent (Get-PSOutput))
 ```
 
 The default for produced `powershell.exe` is x64.