diff --git a/Test/Invoke-WhiskeyBuild.Tests.ps1 b/Test/Invoke-WhiskeyBuild.Tests.ps1
index c739213b..d49e177b 100644
--- a/Test/Invoke-WhiskeyBuild.Tests.ps1
+++ b/Test/Invoke-WhiskeyBuild.Tests.ps1
@@ -17,6 +17,8 @@ $publishPipelineName = 'Publish'
 
 function Init
 {
+    $Global:Error.Clear()
+
     [Whiskey.Context]$script:context = $null
     $script:runByDeveloper = $false
     $script:runByBuildServer = $false
@@ -140,6 +142,20 @@ function GivenWhiskeyYml
 
     $Content | Set-Content -Path (Join-Path $testRoot -ChildPath 'whiskey.yml')
 }
+
+function ThenBuildFailed
+{
+    param(
+        $WithErrorMessage
+    )
+
+    $threwException | Should -BeTrue
+    if( $WithErrorMessage )
+    {
+        $Global:Error | Select-Object -First 1 | Should -Match $WithErrorMessage
+    }
+}
+
 function ThenBuildOutputRemoved
 {
     It ('should remove .output directory') {
@@ -359,6 +375,35 @@ function WhenRunningBuild
     }
 }
 
+function WhenRunningBuildFromBuildPs1
+{
+    [CmdletBinding()]
+    param(
+    )
+
+    $script:threwException = $false
+    $buildPs1Path = Join-Path $testRoot -ChildPath 'build.ps1'
+        @"
+Set-Location -Path "$($testRoot)"
+Import-Module -Name "$(Join-Path -Path $PSScriptRoot -ChildPath '..\Whiskey' -Resolve)"
+Import-Module -Name "$(Join-Path -Path $PSScriptRoot -ChildPath 'WhiskeyTestTasks.psm1' -Resolve)"
+`$context = New-WhiskeyContext -Environment Verification -ConfigurationPath '.\whiskey.yml'
+Invoke-WhiskeyBuild -Context `$context
+New-Item -Path 'passed'
+"@ | Set-Content -Path $buildPs1Path
+
+    # PowerShell's error handling is very different between starting a build from a build.ps1 script vs. a Pester test
+    # calling Invoke-WhiskeyBuild.
+    Start-Job -ScriptBlock {
+        & $using:buildPs1Path
+    } | Receive-Job -Wait -AutoRemoveJob
+
+    if( -not (Test-Path -Path (Join-Path -Path $testRoot -ChildPath 'passed') ) )
+    {
+        $script:threwException = $true
+    }
+}
+
 Describe 'Invoke-WhiskeyBuild.when build passes' {
     Context 'By Developer' {
         Init
@@ -543,3 +588,65 @@ Build:
         $infos | Where-Object { $_ -match 'InformationPreference\ enabled!' } | Should -BeNullOrEmpty
     }
 }
+
+Describe 'Invoke-WhiskeyBuild.when task violates a strict mode rule' {
+    It 'should fail the build' {
+        Init
+        GivenWhiskeyYml @'
+Build:
+- Version:
+    Version: 0.0.0
+- SetStrictModeViolationTask
+'@ 
+        WhenRunningBuildFromBuildPs1 -ErrorAction SilentlyContinue
+        ThenBuildFailed -WithErrorMessage 'Build\ failed\.'
+        $Global:Error[1] | Should -Match 'has\ not\ been\ set'
+    }
+}
+
+Describe 'Invoke-WhiskeyBuild.when task invokes a command that doesn''t exist' {
+    It 'should fail the build' {
+        Init
+        GivenWhiskeyYml @'
+Build:
+- Version:
+    Version: 0.0.0
+- CommandNotFoundTask
+'@
+        WhenRunningBuildFromBuildPs1 -ErrorAction SilentlyContinue
+        ThenBuildFailed -WithErrorMessage 'Build\ failed.'
+        $Global:Error[1] | Should -Match 'is\ not\ recognized'
+    }
+}
+
+Describe 'Invoke-WhiskeyBuild.when task fails' {
+    It 'should fail the build' {
+        Init
+        GivenWhiskeyYml @'
+Build:
+- Version:
+    Version: 0.0.0
+- FailingTask:
+    Message: fdsafjkfsdafjdsf
+'@
+        WhenRunningBuildFromBuildPs1 -ErrorAction SilentlyContinue
+        ThenBuildFailed -WithErrorMessage '\bfdsafjkfsdafjdsf\b'
+        $Global:Error | Should -Not -Match 'Build\ failed\.'
+    }
+}
+
+Describe 'Invoke-WhiskeyBuild.when cmdlet fails because ErrorAction is Stop' {
+    It 'should fail the build' {
+        Init
+        GivenWhiskeyYml @'
+Build:
+- Version:
+    Version: 0.0.0
+- CmdletErrorActionStopTask:
+    Path: ruirwemdsfirewmk
+'@
+        WhenRunningBuildFromBuildPs1 -ErrorAction SilentlyContinue
+        ThenBuildFailed -WithErrorMessage '\bruirwemdsfirewmk\b'
+        $Global:Error | Should -Not -Match 'Build\ failed\.'
+    }
+}
diff --git a/Test/WhiskeyTest.psm1 b/Test/WhiskeyTest.psm1
index ceae513f..5d56a3f1 100644
--- a/Test/WhiskeyTest.psm1
+++ b/Test/WhiskeyTest.psm1
@@ -1,4 +1,6 @@
 
+$PSModulesDirectoryName = 'PSModules'
+
 $exportPlatformVars = $false
 if( -not (Get-Variable -Name 'IsLinux' -ErrorAction Ignore) )
 {
@@ -670,8 +672,6 @@ if( $IsWindows )
     $FailureCommandScriptBlock = { cmd /c exit 1 }
 }
 
-$PSModulesDirectoryName = 'PSModules'
-
 $variablesToExport = & {
     'WhiskeyTestDownloadCachePath'
     'SuccessCommandScriptBlock'
diff --git a/Test/WhiskeyTestTasks.psm1 b/Test/WhiskeyTestTasks.psm1
index 3b301680..e6ebc3a0 100644
--- a/Test/WhiskeyTestTasks.psm1
+++ b/Test/WhiskeyTestTasks.psm1
@@ -50,6 +50,7 @@ function Clear-LastTaskBoundParameter
 {
     $script:lastTaskBoundParameters = $null
 }
+
 function DuplicateAliasTask1
 {
     [Whiskey.Task('DuplicateAliasTask1',Aliases=('DuplicateAliasTask'),WarnWhenUsingAlias)]
@@ -91,10 +92,11 @@ function FailingTask
     [Whiskey.Task('FailingTask')]
     param(
         [Whiskey.Context]$TaskContext,
-        [hashtable]$TaskParameter
+        [hashtable]$TaskParameter,
+        $Message = 'Failed!'
     )
 
-    Stop-WhiskeyTask -TaskContext $TaskContext -Message 'Failed!'
+    Stop-WhiskeyTask -TaskContext $TaskContext -Message $Message
 }
 
 function Get-LastTaskBoundParameter
@@ -399,3 +401,40 @@ function WrapsNoOpTask
 
     Invoke-WhiskeyTask -TaskContext $TaskContext -Parameter $TaskParameter -Name 'NoOpTask'
 }
+
+function SetStrictModeViolationTask
+{
+    [Whiskey.Task('SetStrictModeViolationTask')]
+    [CmdletBinding()]
+    param(
+    )
+
+    Set-StrictMode -Version 'Latest'
+    $ErrorActionPreference = 'Stop'
+
+    Write-Verbose ($fdsocvxkljewqrjfdslk)
+}
+
+function CommandNotFoundTask
+{
+    [Whiskey.Task('CommandNotFoundTask')]
+    [CmdletBinding()]
+    param(
+    )
+
+    Set-StrictMode -Version 'Latest'
+    $ErrorActionPreference = 'Stop'
+
+    Invoke-SomeCommandfdfdsjkfsdaourewfsdrewmkl
+}
+
+function CmdletErrorActionStopTask
+{
+    [Whiskey.Task('CmdletErrorActionStopTask')]
+    [CmdletBinding()]
+    param(
+        $Path = '4lkdfmlfu9jdsfkj09'
+    )
+
+    Resolve-Path $Path -ErrorAction Stop
+}
\ No newline at end of file
diff --git a/Whiskey/Functions/Invoke-WhiskeyBuild.ps1 b/Whiskey/Functions/Invoke-WhiskeyBuild.ps1
index ae766ca5..41443176 100644
--- a/Whiskey/Functions/Invoke-WhiskeyBuild.ps1
+++ b/Whiskey/Functions/Invoke-WhiskeyBuild.ps1
@@ -151,4 +151,13 @@ function Invoke-WhiskeyBuild
 
         $env:PSModulePath = $originalPSModulesPath
     }
+
+    # There are some errors (strict mode validation failures, command not found errors, etc.) that stop a build, but 
+    # even though ErrorActionPreference is Stop, it doesn't stop the current process, which is what causes a build to 
+    # fail the build. If we get here, and the build didn't succeed, we've encountered one of those errors. Throw a 
+    # guaranteed terminating error.
+    if( -not $succeeded )
+    {
+        Write-Error -Message ('Build failed. See previous error output for more information.') -ErrorAction Stop
+    }
 }
diff --git a/Whiskey/Whiskey.psd1 b/Whiskey/Whiskey.psd1
index 23dc7ada..1f6a895e 100644
--- a/Whiskey/Whiskey.psd1
+++ b/Whiskey/Whiskey.psd1
@@ -162,6 +162,7 @@
 * The `GetPowerShellModule` task now supports installing prerelease versions of modules. Set the `AllowPrerelease` property to `true`.
 * The `GetPowerShellModule` task can now install a module into a custom directory instead of the PSModules directory. Pass the path to the `Path` parameter.
 * The `GetPowerShellModule` task can now import the module being installed. Set the `Import` property to `true`.
+* Fixed: Whiskey fails to fail a build when certain PowerShell terminating errors are thrown (i.e. strict mode violations, command not found error, etc.).
 '@
         } # End of PSData hashtable
 
diff --git a/build.ps1 b/build.ps1
index a8ad88cd..e790065d 100644
--- a/build.ps1
+++ b/build.ps1
@@ -199,6 +199,8 @@ foreach( $assembly in (Get-ChildItem -Path $whiskeyOutBinPath -Filter '*.dll') )
     Copy-Item -Path $assembly.FullName -Destination $whiskeyBinPath
 }
 
+$ErrorActionPreference = 'Continue'
+
 & (Join-Path -Path $PSScriptRoot -ChildPath 'Whiskey\Import-Whiskey.ps1' -Resolve)
 
 $configPath = Join-Path -Path $PSScriptRoot -ChildPath 'whiskey.yml' -Resolve