diff --git a/src/Chromely.CefSharp.Integration.TestApp/Chromely.CefSharp.Integration.TestApp.csproj b/src/Chromely.CefSharp.Integration.TestApp/Chromely.CefSharp.Integration.TestApp.csproj
index 67c92a0..885c4f2 100644
--- a/src/Chromely.CefSharp.Integration.TestApp/Chromely.CefSharp.Integration.TestApp.csproj
+++ b/src/Chromely.CefSharp.Integration.TestApp/Chromely.CefSharp.Integration.TestApp.csproj
@@ -5,16 +5,21 @@
     <TargetFramework>netcoreapp3.1</TargetFramework>
     <UseWindowsForms>true</UseWindowsForms>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
-    <Platforms>x64</Platforms>
     <ApplicationIcon>chromely.ico</ApplicationIcon>
+    <!--
+	  When RuntimeIdentifier specified SelfContained defaults to true, which copies the whole runtime
+    to our bin folder, for purposes of this example set to false
+	  -->
+    <RuntimeIdentifier Condition="'$(RuntimeIdentifier)' == ''">$(NETCoreSdkRuntimeIdentifier)</RuntimeIdentifier>
+    <SelfContained>false</SelfContained>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="CefSharp.Common" Version="86.0.241" />
+    <PackageReference Include="CefSharp.Common" Version="88.2.90" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="3.1.5" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.5" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="3.1.5" />
-    <PackageReference Include="System.Text.Json" Version="4.7.2" />
+    <PackageReference Include="System.Text.Json" Version="5.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Chromely.CefSharp/Browser/ChromiumBrowser.Dispose.cs b/src/Chromely.CefSharp/Browser/ChromiumBrowser.Dispose.cs
index eb2fde9..b2673a1 100644
--- a/src/Chromely.CefSharp/Browser/ChromiumBrowser.Dispose.cs
+++ b/src/Chromely.CefSharp/Browser/ChromiumBrowser.Dispose.cs
@@ -104,7 +104,7 @@ private void InternalDispose(bool disposing)
                 }
 
                 //Dispose of BrowserSettings if we created it, if user created then they're responsible
-                if (_browserSettings != null && _browserSettings.FrameworkCreated)
+                if (_browserSettings != null && _browserSettings.AutoDispose)
                 {
                     _browserSettings.Dispose();
                 }
diff --git a/src/Chromely.CefSharp/Browser/ChromiumBrowser.cs b/src/Chromely.CefSharp/Browser/ChromiumBrowser.cs
index 5007f4d..33e627f 100644
--- a/src/Chromely.CefSharp/Browser/ChromiumBrowser.cs
+++ b/src/Chromely.CefSharp/Browser/ChromiumBrowser.cs
@@ -29,7 +29,7 @@ public abstract partial class ChromiumBrowser : IWebBrowserInternal
         /// <summary>
         /// The managed cef browser adapter
         /// </summary>
-        protected ManagedCefBrowserAdapter _managedCefBrowserAdapter;
+        protected IBrowserAdapter _managedCefBrowserAdapter;
         /// <summary>
         /// The browser
         /// </summary>
@@ -82,7 +82,6 @@ public ChromiumBrowser(IChromelyNativeHost nativeHost, IChromelyConfiguration co
         {
             NativeHost = nativeHost;
             _config = config;
-            CefSharpSettings.LegacyJavascriptBindingEnabled = false;
         }
 
         public IChromelyNativeHost NativeHost { get; private set; }
@@ -404,7 +403,7 @@ private void InitializeFieldsAndCefIfRequired()
                     _browserSettings = new BrowserSettings();
                 }
 
-                _managedCefBrowserAdapter = new ManagedCefBrowserAdapter(this, false);
+                _managedCefBrowserAdapter = ManagedCefBrowserAdapter.Create(this, false);
 
                 _initialized = true;
             }
diff --git a/src/Chromely.CefSharp/Chromely.CefSharp.csproj b/src/Chromely.CefSharp/Chromely.CefSharp.csproj
index e21ce46..c679a9c 100644
--- a/src/Chromely.CefSharp/Chromely.CefSharp.csproj
+++ b/src/Chromely.CefSharp/Chromely.CefSharp.csproj
@@ -1,31 +1,31 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard2.1</TargetFrameworks>
-    <CefSharpAnyCpuSupport>true</CefSharpAnyCpuSupport>
+    <TargetFrameworks>net462;netcoreapp3.1;net5.0-windows</TargetFrameworks>
+    <CefSharpBuildAction>NoAction</CefSharpBuildAction>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
     <ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>None</ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>
-    <ProductVersion>5.1.86.0</ProductVersion>
-    <AssemblyVersion>5.1.86.0</AssemblyVersion>
-    <FileVersion>5.1.86.0</FileVersion>
-    <Version>5.1.86.0</Version>
+    <ProductVersion>5.1.88.0</ProductVersion>
+    <AssemblyVersion>5.1.88.0</AssemblyVersion>
+    <FileVersion>5.1.88.0</FileVersion>
+    <Version>5.1.88.0</Version>
     <Authors>Chromely Projects</Authors>
     <Company>Chromely Projects</Company>
-    <Description>Chromely CefSharp implementation - this is in NetStandard as it can be used in both .NET Framework, .NET Core 3 and .NET 5 (Windows Only). Chromely.CefSharp version naming is based Chromely and Chromium versions implemented- major.minor.chromuim version.patch e.g 1.0.71.0.</Description>
-    <Copyright>Copyright © 2017-2020 Chromely Projects</Copyright>
+    <Description>Chromely CefSharp implementation - can be used in .Net 4.6.2, .NET Core 3.1 and .NET 5 (Windows Only) projects. Chromely.CefSharp version naming is based Chromely and Chromium versions implemented- major.minor.chromuim version.patch e.g 1.0.71.0.</Description>
+    <Copyright>Copyright © 2017-2021 Chromely Projects</Copyright>
     <PackageLicenseUrl>https://github.com/chromelyapps/Chromely/blob/master/LICENSE.md</PackageLicenseUrl>
     <PackageProjectUrl>https://github.com/chromelyapps/CefSharp</PackageProjectUrl>
     <PackageIconUrl>https://github.com/chromelyapps/Chromely/blob/master/nugets/chromely.ico?raw=true</PackageIconUrl>
     <PackageTags>CEF Chromium HTML5 Desktop Chromely CefSharp NetStandard .NET Core 3 .NET 5</PackageTags>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageReleaseNotes>
-      - Breaking changes.
-      - Fixes for frameless window - https://github.com/chromelyapps/Chromely/issues/266
-      - Upgraded to CefSharp/Chromium v86.
+      - Upgraded to CefSharp/Chromium v88.
+      - Can no longer target .Net Standard, must target .Net 4.6.2 or .Net Core 3.1 or .Net 5.0
+      - Update to System.Text.Json 5.0.0 (Required by CefSharp).
     </PackageReleaseNotes>
     <RepositoryType>Github Repository</RepositoryType>
     <RepositoryUrl>https://github.com/chromelyapps/CefSharp</RepositoryUrl>
-    <Configurations>Debug;Release;ReleaseLinux;DebugLinux</Configurations>
+    <Configurations>Debug;Release;</Configurations>
     <Platforms>AnyCPU</Platforms>
   </PropertyGroup>
 
@@ -42,13 +42,32 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'NET462'">
+    <DefineConstants>$(DefineConstants);NET462</DefineConstants>
+  </PropertyGroup>
+  
+  <PropertyGroup Condition=" '$(TargetFramework)' != 'NET462'">
+    <DefineConstants>$(DefineConstants);NETCOREAPP</DefineConstants>
+  </PropertyGroup>
+  
+  <ItemGroup Condition="'$(TargetFramework)' == 'net462'">
+    <PackageReference Include="CefSharp.Common" Version="88.2.90" ExcludeAssets="buildTransitive">
+      <ExcludeAssets>buildTransitive</ExcludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(TargetFramework)' != 'net462'">
+    <PackageReference Include="CefSharp.Common.NETCore" Version="88.2.90">
+      <ExcludeAssets>buildTransitive</ExcludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
   <ItemGroup>
-    <PackageReference Include="CefSharp.Common" Version="86.0.241" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="3.1.5" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.5" />
     <PackageReference Include="Microsoft.CSharp" Version="4.6.0" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="3.1.5" />
-    <PackageReference Include="System.Text.Json" Version="4.7.2" />
+    <PackageReference Include="System.Text.Json" Version="5.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Chromely.CefSharp/Window.Services.cs b/src/Chromely.CefSharp/Window.Services.cs
index 0c8fde4..a025a14 100644
--- a/src/Chromely.CefSharp/Window.Services.cs
+++ b/src/Chromely.CefSharp/Window.Services.cs
@@ -188,7 +188,12 @@ protected virtual void RegisterJsHandlers()
                                 {
                                     var bindingOptions = handler.BindingOptions as BindingOptions;
                                     bindingOptions = bindingOptions ?? BindingOptions.DefaultBinder;
+#if NET462
                                     repo.Register(name: handler.ObjectName, objectToBind: handler.BoundObject, isAsync: true, options: bindingOptions);
+#else
+                                    repo.Register(name: handler.ObjectName, objectToBind: handler.BoundObject, options: bindingOptions);
+#endif
+
                                 }
                                 else
                                 {
diff --git a/src/ChromelyCefSharp.sln b/src/ChromelyCefSharp.sln
index afd751d..dec9698 100644
--- a/src/ChromelyCefSharp.sln
+++ b/src/ChromelyCefSharp.sln
@@ -17,91 +17,35 @@ EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
-		Debug|x64 = Debug|x64
-		Debug|x86 = Debug|x86
 		DebugLinux|Any CPU = DebugLinux|Any CPU
-		DebugLinux|x64 = DebugLinux|x64
-		DebugLinux|x86 = DebugLinux|x86
 		Release|Any CPU = Release|Any CPU
-		Release|x64 = Release|x64
-		Release|x86 = Release|x86
 		ReleaseLinux|Any CPU = ReleaseLinux|Any CPU
-		ReleaseLinux|x64 = ReleaseLinux|x64
-		ReleaseLinux|x86 = ReleaseLinux|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Debug|x64.Build.0 = Debug|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Debug|x86.Build.0 = Debug|Any CPU
 		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.DebugLinux|Any CPU.ActiveCfg = DebugLinux|Any CPU
 		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.DebugLinux|Any CPU.Build.0 = DebugLinux|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.DebugLinux|x64.ActiveCfg = DebugLinux|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.DebugLinux|x64.Build.0 = DebugLinux|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.DebugLinux|x86.ActiveCfg = DebugLinux|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.DebugLinux|x86.Build.0 = DebugLinux|Any CPU
 		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Release|Any CPU.Build.0 = Release|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Release|x64.ActiveCfg = Release|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Release|x64.Build.0 = Release|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Release|x86.ActiveCfg = Release|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.Release|x86.Build.0 = Release|Any CPU
 		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.ReleaseLinux|Any CPU.ActiveCfg = ReleaseLinux|Any CPU
 		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.ReleaseLinux|Any CPU.Build.0 = ReleaseLinux|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.ReleaseLinux|x64.ActiveCfg = ReleaseLinux|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.ReleaseLinux|x64.Build.0 = ReleaseLinux|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.ReleaseLinux|x86.ActiveCfg = ReleaseLinux|Any CPU
-		{D13B0961-3627-4428-BB9B-72F8E7023EAE}.ReleaseLinux|x86.Build.0 = ReleaseLinux|Any CPU
 		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.Debug|Any CPU.Build.0 = Debug|Any CPU
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-		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.Debug|x64.Build.0 = Debug|Any CPU
-		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.Debug|x86.Build.0 = Debug|Any CPU
 		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.DebugLinux|Any CPU.ActiveCfg = Debug|Any CPU
 		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.DebugLinux|Any CPU.Build.0 = Debug|Any CPU
-		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.DebugLinux|x64.ActiveCfg = Debug|Any CPU
-		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.DebugLinux|x64.Build.0 = Debug|Any CPU
-		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.DebugLinux|x86.ActiveCfg = Debug|Any CPU
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 		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.Release|Any CPU.ActiveCfg = Release|Any CPU
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-		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.Release|x64.Build.0 = Release|Any CPU
-		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.Release|x86.ActiveCfg = Release|Any CPU
-		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.Release|x86.Build.0 = Release|Any CPU
 		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.ReleaseLinux|Any CPU.ActiveCfg = Release|Any CPU
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-		{49A3A157-59CB-48E4-9DF8-BA1FF5F86A39}.ReleaseLinux|x64.Build.0 = Release|Any CPU
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-		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.Debug|Any CPU.ActiveCfg = Debug|x64
-		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.Debug|Any CPU.Build.0 = Debug|x64
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-		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.Debug|x64.Build.0 = Debug|x64
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-		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.Debug|x86.Build.0 = Debug|x86
+		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.Debug|Any CPU.Build.0 = Debug|Any CPU
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-		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.DebugLinux|x64.Build.0 = Debug|x64
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-		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.Release|x64.Build.0 = Release|x64
-		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.Release|x86.ActiveCfg = Release|x86
-		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.Release|x86.Build.0 = Release|x86
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-		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.ReleaseLinux|x64.Build.0 = Release|x64
-		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.ReleaseLinux|x86.ActiveCfg = Release|x86
-		{5DD9EF52-6E7E-4818-99CB-3FC40B2FE4E0}.ReleaseLinux|x86.Build.0 = Release|x86
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE