diff --git a/build.sh b/build.sh
index 40b13ae3c..ce85413c5 100755
--- a/build.sh
+++ b/build.sh
@@ -12,6 +12,8 @@ sourceFolder='./src'
 slnFile=$sourceFolder/Sonarr.sln
 updateSubFolder=Sonarr.Update
 
+sqlitePackageDir="$HOME/.nuget/packages/system.data.sqlite.core.lidarr/1.0.111-5"
+
 nuget='tools/nuget/nuget.exe';
 vswhere='tools/vswhere/vswhere.exe';
 
@@ -88,16 +90,17 @@ CleanFolder()
 
 BuildWithMSBuild()
 {
-    installationPath=`$vswhere -latest -products \* -requires Microsoft.Component.MSBuild -property installationPath`
-    installationPath=${installationPath/C:\\/\/c\/}
-    installationPath=${installationPath//\\/\/}
-    msBuild="$installationPath/MSBuild/$msBuildVersion/Bin"
-    echo $msBuild
+    msBuildPath=`$vswhere -latest -products \* -requires Microsoft.Component.MSBuild -find MSBuild\\\\\*\*\\\\Bin\\\\MSBuild.exe`
+    msBuildPath=${msBuildPath/C:\\/\/c\/}
+    msBuildPath=${msBuildPath//\\/\/}
+    msBuildDir=$(dirname "$msBuildPath")
 
-    export PATH=$msBuild:$PATH
-    CheckExitCode MSBuild.exe $slnFile //p:Configuration=Release //p:Platform=x86 //t:Clean //m
+    echo $msBuildDir
+
+    export PATH=$msBuildDir:$PATH
+    CheckExitCode MSBuild.exe $slnFile //p:Configuration=Release //p:Platform=x64 //t:Clean //m
     $nuget restore $slnFile
-    CheckExitCode MSBuild.exe $slnFile //p:Configuration=Release //p:Platform=x86 //t:Build //m //p:AllowedReferenceRelatedFileExtensions=.pdb
+    CheckExitCode MSBuild.exe $slnFile //p:Configuration=Release //p:Platform=x64 //t:Build //m //p:AllowedReferenceRelatedFileExtensions=.pdb
 }
 
 BuildWithXbuild()
@@ -134,9 +137,6 @@ Build()
 
     CleanFolder $outputFolder false
 
-    echo "Removing Mono.Posix.dll"
-    rm $outputFolder/Mono.Posix.dll
-
     ProgressEnd 'Build'
 }
 
@@ -170,48 +170,6 @@ CreateMdbs()
     fi
 }
 
-PatchMono()
-{
-    local path=$1
-
-    # Below we deal with some mono incompatibilities with windows-only dotnet core/standard libs    
-    # See: https://github.com/mono/mono/blob/master/tools/nuget-hash-extractor/download.sh
-    # That list defines assemblies that are prohibited from being loaded from the appdir, instead loading from mono GAC.
-
-    # We have debian dependencies to get these installed or facades from mono 5.10+
-    for assembly in System.IO.Compression System.Runtime.InteropServices.RuntimeInformation System.Net.Http System.Globalization.Extensions System.Text.Encoding.CodePages System.Threading.Overlapped
-    do
-        if [ -e $path/$assembly.dll ]; then
-            if [ -e $sourceFolder/Libraries/Mono/$assembly.dll ]; then
-                echo "Copy Mono-specific facade $assembly.dll (uses win32 interop)"
-                cp $sourceFolder/Libraries/Mono/$assembly.dll $path/$assembly.dll
-            else
-                echo "Remove $assembly.dll (uses win32 interop)"
-                rm $path/$assembly.dll
-            fi
-            
-        fi
-    done
-
-    # Copy more stable version of Vectors for mono <5.12
-    if [ -e $path/System.Numerics.Vectors.dll ]; then
-        packageDir="$HOME/.nuget/packages/system.numerics.vectors/4.5.0"
-
-        if [ ! -d "$HOME/.nuget/packages/system.numerics.vectors/4.5.0" ]; then
-            # May reside in the NuGetFallback folder, which is harder to find
-            # Download somewhere to get the real cache populated
-            if [ $runtime = "dotnet" ] ; then
-                $nuget install System.Numerics.Vectors -Version 4.5.0 -Output ./_temp/System.Numerics.Vectors
-            else
-                mono $nuget install System.Numerics.Vectors -Version 4.5.0 -Output ./_temp/System.Numerics.Vectors
-            fi
-            rm -rf ./_temp/System.Numerics.Vectors
-        fi
-        # Copy the netstandard2.0 version rather than net46
-        cp "$packageDir/lib/netstandard2.0/System.Numerics.Vectors.dll" $path/
-    fi
-}
-
 PackageMono()
 {
     ProgressStart 'Creating Mono Package'
@@ -235,15 +193,9 @@ PackageMono()
     rm -f $outputFolderLinux/sqlite3.*
     rm -f $outputFolderLinux/MediaInfo.*
 
-    PatchMono $outputFolderLinux
-
     echo "Adding Sonarr.Core.dll.config (for dllmap)"
     cp $sourceFolder/NzbDrone.Core/Sonarr.Core.dll.config $outputFolderLinux
 
-    # Remove Http binding redirect by renaming it
-    # We don't need this anymore once our minimum mono version is 5.10
-    sed -i "s/System.Net.Http/System.Net.Http.Mono/g" $outputFolderLinux/Sonarr.Console.exe.config
-
     echo "Renaming Sonarr.Console.exe to Sonarr.exe"
     rm $outputFolderLinux/Sonarr.exe*
     for file in $outputFolderLinux/Sonarr.Console.exe*; do
@@ -273,11 +225,11 @@ PackageMacOS()
     echo "Copying Binaries"
     cp -r $outputFolderLinux/* $outputFolderMacOS
 
-    echo "Adding sqlite dylibs"
-    cp $sourceFolder/Libraries/Sqlite/*.dylib $outputFolderMacOS
+    echo "Adding sqlite dylib"
+    cp "$sqlitePackageDir/runtimes/osx-x64/native/net46"/* $outputFolderMacOS
 
     echo "Adding MediaInfo dylib"
-    cp $sourceFolder/Libraries/MediaInfo/*.dylib $outputFolderMacOS
+    cp $sourceFolder/Libraries/MediaInfo/x64/*.dylib $outputFolderMacOS
 
     ProgressEnd 'Creating MacOS Package'
 }
@@ -298,11 +250,11 @@ PackageMacOSApp()
     echo "Copying Binaries"
     cp -r $outputFolderLinux/* $outputFolderMacOSApp/Sonarr.app/Contents/MacOS
 
-    echo "Adding sqlite dylibs"
-    cp $sourceFolder/Libraries/Sqlite/*.dylib $outputFolderMacOSApp/Sonarr.app/Contents/MacOS
+    echo "Adding sqlite dylib"
+    cp "$sqlitePackageDir/runtimes/osx-x64/native/net46"/* $outputFolderMacOS
 
     echo "Adding MediaInfo dylib"
-    cp $sourceFolder/Libraries/MediaInfo/*.dylib $outputFolderMacOSApp/Sonarr.app/Contents/MacOS
+    cp $sourceFolder/Libraries/MediaInfo/x64/*.dylib $outputFolderMacOS
 
     echo "Removing Update Folder"
     rm -r $outputFolderMacOSApp/Sonarr.app/Contents/MacOS/Sonarr.Update
@@ -331,15 +283,9 @@ PackageTestsMono()
     echo "Removing PDBs"
     find $testPackageFolderLinux -name "*.pdb" -exec rm "{}" \;
 
-    PatchMono $testPackageFolderLinux
-
     echo "Adding Sonarr.Core.dll.config (for dllmap)"
     cp $sourceFolder/NzbDrone.Core/Sonarr.Core.dll.config $testPackageFolderLinux
 
-    # Remove Http binding redirect by renaming it
-    # We don't need this anymore once our minimum mono version is 5.10
-    sed -i "s/System.Net.Http/System.Net.Http.Mono/g" $testPackageFolderLinux/Sonarr.Common.Test.dll.config
-
     cp ./test.sh $testPackageFolderLinux/
     dos2unix $testPackageFolderLinux/test.sh
 
diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index b45f9f3f7..54dcaef19 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -3,6 +3,17 @@
   <PropertyGroup>
     <SonarrRootDir>$(MSBuildThisFileDirectory)..\</SonarrRootDir>
 
+    <!-- Whether we want TargetFramework switching in Visual Studio -->
+    <TargetMultiple>false</TargetMultiple>
+    
+    <TargetNet48>false</TargetNet48>
+    <TargetNetCore>false</TargetNetCore>
+
+    <TargetFrameworks>net472</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(TargetNet48)'=='true' ">$(TargetFrameworks);net48</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(TargetNetCore)'=='true' ">$(TargetFrameworks);netcoreapp3.0</TargetFrameworks>
+    <RuntimeIdentifiers>win-x64;osx-x64;linux-x64</RuntimeIdentifiers>
+    
     <!-- Specifies the type of output -->
     <SonarrOutputType>Library</SonarrOutputType>
     <SonarrOutputType Condition="$(MSBuildProjectName.Contains('.Test'))">Test</SonarrOutputType>
@@ -19,24 +30,41 @@
     <SonarrProject Condition="$(MSBuildProjectName.StartsWith('ServiceUninstall'))">true</SonarrProject>
   </PropertyGroup>
 
+  <!-- Pick default RuntimeIdentifier for our compilation environment -->
+  <PropertyGroup Condition=" '$(TargetMultiple)'!='true' ">
+      <RuntimeIdentifiers></RuntimeIdentifiers>
+      <RuntimeIdentifier>win-x64</RuntimeIdentifier>
+      <TargetFrameworks></TargetFrameworks>
+      <TargetFramework>net472</TargetFramework>
+  </PropertyGroup>
+
   <PropertyGroup>
     <Configuration Condition="'$(Configuration)'==''">Release</Configuration>
+
+    <TargetFrameworkPath>$(TargetFramework)\</TargetFrameworkPath>
+    <TargetFrameworkPath Condition="'$(Platform)'!='x64'">$(TargetFrameworkPath)$(Platform)\</TargetFrameworkPath>
+    <TargetFrameworkPath>$(TargetFrameworkPath)$(Configuration)\</TargetFrameworkPath>
+
     <!-- Centralize intermediate and default outputs -->
     <BaseIntermediateOutputPath>$(SonarrRootDir)_temp\obj\$(MSBuildProjectName)\</BaseIntermediateOutputPath>
-    <IntermediateOutputPath>$(SonarrRootDir)_temp\obj\$(MSBuildProjectName)\$(Configuration)\</IntermediateOutputPath>
-    <OutputPath>$(SonarrRootDir)_temp\bin\$(Configuration)\$(MSBuildProjectName)\</OutputPath>
+    <IntermediateOutputPath>$(SonarrRootDir)_temp\obj\$(MSBuildProjectName)\$(TargetFrameworkPath)</IntermediateOutputPath>
+    <OutputPath>$(SonarrRootDir)_temp\bin\$(TargetFrameworkPath)$(MSBuildProjectName)\</OutputPath>
+
+    <!-- Flatten the 'real' output paths for backward compat -->
+    <OutputTargetFrameworkPath>$(TargetFrameworkPath)</OutputTargetFrameworkPath>
+    <OutputTargetFrameworkPath Condition=" '$(TargetMultiple)'!='true' "></OutputTargetFrameworkPath>
 
     <!-- Output to _output and _tests respectively -->
-    <OutputPath Condition="'$(SonarrProject)'=='true'">$(SonarrRootDir)_output\</OutputPath>
-    <OutputPath Condition="'$(SonarrOutputType)'=='Test'">$(SonarrRootDir)_tests\</OutputPath>
-    <OutputPath Condition="'$(SonarrOutputType)'=='Update'">$(SonarrRootDir)_output\Sonarr.Update\</OutputPath>
+    <OutputPath Condition="'$(SonarrProject)'=='true'">$(SonarrRootDir)_output\$(OutputTargetFrameworkPath)</OutputPath>
+    <OutputPath Condition="'$(SonarrOutputType)'=='Test'">$(SonarrRootDir)_tests\$(OutputTargetFrameworkPath)</OutputPath>
+    <OutputPath Condition="'$(SonarrOutputType)'=='Update'">$(OutputPath)Sonarr.Update\</OutputPath>
 
     <!-- Paths relative to project file for better readability -->
     <BaseIntermediateOutputPath>$([MSBuild]::MakeRelative('$(MSBuildProjectDirectory)', '$(BaseIntermediateOutputPath)'))</BaseIntermediateOutputPath>
     <IntermediateOutputPath>$([MSBuild]::MakeRelative('$(MSBuildProjectDirectory)', '$(IntermediateOutputPath)'))</IntermediateOutputPath>
     <OutputPath>$([MSBuild]::MakeRelative('$(MSBuildProjectDirectory)', '$(OutputPath)'))</OutputPath>
 
-    <!-- below net4.7.1 the new portable pdb format has no line numbers, pdb to mdb probably doesn't like it either -->
+    <!-- Below net4.7.1 the new portable pdb format has no line numbers, pdb to mdb probably doesn't like it either -->
     <DebugType>full</DebugType>
     <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
@@ -73,6 +101,7 @@
   <PropertyGroup>
     <!-- We don't want separate framework directories till we go dotnet core -->
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+    <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
 
     <!-- For now keep the NzbDrone namespace -->
     <RootNamespace Condition="'$(SonarrProject)'=='true'">$(MSBuildProjectName.Replace('Sonarr','NzbDrone'))</RootNamespace>
diff --git a/src/Libraries/Mono/System.Globalization.Extensions.dll b/src/Libraries/Mono/System.Globalization.Extensions.dll
deleted file mode 100644
index 8c0861579..000000000
Binary files a/src/Libraries/Mono/System.Globalization.Extensions.dll and /dev/null differ
diff --git a/src/Libraries/Mono/System.Runtime.InteropServices.RuntimeInformation.dll b/src/Libraries/Mono/System.Runtime.InteropServices.RuntimeInformation.dll
deleted file mode 100644
index e55b5eb23..000000000
Binary files a/src/Libraries/Mono/System.Runtime.InteropServices.RuntimeInformation.dll and /dev/null differ
diff --git a/src/Libraries/Mono/System.Text.Encoding.CodePages.dll b/src/Libraries/Mono/System.Text.Encoding.CodePages.dll
deleted file mode 100644
index 414770bc0..000000000
Binary files a/src/Libraries/Mono/System.Text.Encoding.CodePages.dll and /dev/null differ
diff --git a/src/Libraries/Mono/System.Threading.Overlapped.dll b/src/Libraries/Mono/System.Threading.Overlapped.dll
deleted file mode 100644
index c06475843..000000000
Binary files a/src/Libraries/Mono/System.Threading.Overlapped.dll and /dev/null differ
diff --git a/src/Libraries/Mono/readme.txt b/src/Libraries/Mono/readme.txt
deleted file mode 100644
index f1251a98f..000000000
--- a/src/Libraries/Mono/readme.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-Copied from mono/4.5/Facades of the mono 5.4 release.
-These are the mono version of the dotnet Core TypeForwardedTo assemblies.
-Using these assemblies is no longer necessary once we reach mono 5.18 as minimum version
\ No newline at end of file
diff --git a/src/NzbDrone.Mono.Test/Sonarr.Mono.Test.csproj b/src/NzbDrone.Mono.Test/Sonarr.Mono.Test.csproj
index 0897f23f0..81cd5ebe3 100644
--- a/src/NzbDrone.Mono.Test/Sonarr.Mono.Test.csproj
+++ b/src/NzbDrone.Mono.Test/Sonarr.Mono.Test.csproj
@@ -10,6 +10,7 @@
   <ItemGroup>
     <Reference Include="Mono.Posix">
       <HintPath>..\Libraries\Mono.Posix.dll</HintPath>
+      <Private>false</Private>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/tools/vswhere/vswhere.exe b/tools/vswhere/vswhere.exe
index e1b511803..582e82868 100644
Binary files a/tools/vswhere/vswhere.exe and b/tools/vswhere/vswhere.exe differ