diff --git a/Projects/Server/Collections/PooledRefQueue.cs b/Projects/Server/Collections/PooledRefQueue.cs
index 00ff4b505..2a73e4bde 100644
--- a/Projects/Server/Collections/PooledRefQueue.cs
+++ b/Projects/Server/Collections/PooledRefQueue.cs
@@ -316,7 +316,11 @@ public ref struct PooledRefQueue<T>
     }
 
     // Increments the index wrapping it if necessary.
+#if NET7_SDK
+    private void MoveNext(scoped ref int index)
+#else
     private void MoveNext(ref int index)
+#endif
     {
         // It is tempting to use the remainder operator here but it is actually much slower
         // than a simple comparison and a rarely taken branch.
diff --git a/Projects/Server/Gumps/GumpAlphaRegion.cs b/Projects/Server/Gumps/GumpAlphaRegion.cs
index 376aacd0d..119d183e0 100644
--- a/Projects/Server/Gumps/GumpAlphaRegion.cs
+++ b/Projects/Server/Gumps/GumpAlphaRegion.cs
@@ -36,7 +36,11 @@ public class GumpAlphaRegion : GumpEntry
 
     public int Height { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         writer.WriteAscii($"{{ checkertrans {X} {Y} {Width} {Height} }}");
     }
diff --git a/Projects/Server/Gumps/GumpBackground.cs b/Projects/Server/Gumps/GumpBackground.cs
index 422fe063a..99614d389 100644
--- a/Projects/Server/Gumps/GumpBackground.cs
+++ b/Projects/Server/Gumps/GumpBackground.cs
@@ -39,7 +39,11 @@ public class GumpBackground : GumpEntry
 
     public int GumpID { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         writer.WriteAscii($"{{ resizepic {X} {Y} {GumpID} {Width} {Height} }}");
     }
diff --git a/Projects/Server/Gumps/GumpButton.cs b/Projects/Server/Gumps/GumpButton.cs
index 679bffbf9..6d44556e4 100644
--- a/Projects/Server/Gumps/GumpButton.cs
+++ b/Projects/Server/Gumps/GumpButton.cs
@@ -54,7 +54,11 @@ public class GumpButton : GumpEntry
 
     public int Param { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         writer.WriteAscii($"{{ button {X} {Y} {NormalID} {PressedID} {(int)Type} {Param} {ButtonID} }}");
     }
diff --git a/Projects/Server/Gumps/GumpCheck.cs b/Projects/Server/Gumps/GumpCheck.cs
index bcfa289d4..006997002 100644
--- a/Projects/Server/Gumps/GumpCheck.cs
+++ b/Projects/Server/Gumps/GumpCheck.cs
@@ -42,7 +42,11 @@ public class GumpCheck : GumpEntry
 
     public int SwitchID { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         var initialState = InitialState ? "1" : "0";
         writer.WriteAscii($"{{ checkbox {X} {Y} {InactiveID} {ActiveID} {initialState} {SwitchID} }}");
diff --git a/Projects/Server/Gumps/GumpECHandleInput.cs b/Projects/Server/Gumps/GumpECHandleInput.cs
index 2bd494a8e..88a6a45e6 100644
--- a/Projects/Server/Gumps/GumpECHandleInput.cs
+++ b/Projects/Server/Gumps/GumpECHandleInput.cs
@@ -22,7 +22,11 @@ public class GumpECHandleInput : GumpEntry
 {
     private static byte[] _layout = Gump.StringToBuffer("{ echandleinput }");
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         writer.Write(_layout);
     }
diff --git a/Projects/Server/Gumps/GumpEntry.cs b/Projects/Server/Gumps/GumpEntry.cs
index 175f6f813..3113aad8e 100644
--- a/Projects/Server/Gumps/GumpEntry.cs
+++ b/Projects/Server/Gumps/GumpEntry.cs
@@ -25,5 +25,9 @@ public abstract class GumpEntry
 
     // TODO: Replace OrderedHashSet with InsertOnlyHashSet, a copy of HashSet that is ReadOnly compatible, but includes
     // a public AddIfNotPresent function that returns the index of the element
+#if NET7_SDK
+    public abstract void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches);
+#else
     public abstract void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches);
+#endif
 }
diff --git a/Projects/Server/Gumps/GumpGroup.cs b/Projects/Server/Gumps/GumpGroup.cs
index a24c0debc..aa9f46fd1 100644
--- a/Projects/Server/Gumps/GumpGroup.cs
+++ b/Projects/Server/Gumps/GumpGroup.cs
@@ -26,7 +26,11 @@ public class GumpGroup : GumpEntry
 
     public int Group { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         if (Group == 1)
         {
diff --git a/Projects/Server/Gumps/GumpHtml.cs b/Projects/Server/Gumps/GumpHtml.cs
index 12b77ed05..e971362ae 100644
--- a/Projects/Server/Gumps/GumpHtml.cs
+++ b/Projects/Server/Gumps/GumpHtml.cs
@@ -45,7 +45,11 @@ public class GumpHtml : GumpEntry
 
     public bool Scrollbar { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         var textIndex = strings.GetOrAdd(Text ?? "");
         var background = Background ? "1" : "0";
diff --git a/Projects/Server/Gumps/GumpHtmlLocalized.cs b/Projects/Server/Gumps/GumpHtmlLocalized.cs
index a4241dfbb..21759b48f 100644
--- a/Projects/Server/Gumps/GumpHtmlLocalized.cs
+++ b/Projects/Server/Gumps/GumpHtmlLocalized.cs
@@ -101,7 +101,11 @@ public class GumpHtmlLocalized : GumpEntry
     public GumpHtmlLocalizedType Type { get; set; }
 
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         var background = Background ? "1" : "0";
         var scrollbar = Scrollbar ? "1" : "0";
diff --git a/Projects/Server/Gumps/GumpImage.cs b/Projects/Server/Gumps/GumpImage.cs
index ba3d17969..ef1ae1a3f 100644
--- a/Projects/Server/Gumps/GumpImage.cs
+++ b/Projects/Server/Gumps/GumpImage.cs
@@ -39,7 +39,11 @@ public class GumpImage : GumpEntry
 
     public string Class { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         var hasHue = Hue != 0;
         var hasClass = !string.IsNullOrEmpty(Class);
diff --git a/Projects/Server/Gumps/GumpImageTileButton.cs b/Projects/Server/Gumps/GumpImageTileButton.cs
index 4bb862af9..28cfc3b26 100644
--- a/Projects/Server/Gumps/GumpImageTileButton.cs
+++ b/Projects/Server/Gumps/GumpImageTileButton.cs
@@ -61,7 +61,11 @@ public class GumpImageTileButton : GumpEntry
 
     public int Height { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         writer.WriteAscii(
             $"{{ buttontileart {X} {Y} {NormalID} {PressedID} {(int)Type} {Param} {ButtonID} {ItemID} {Hue} {Width} {Height} }}"
diff --git a/Projects/Server/Gumps/GumpImageTiled.cs b/Projects/Server/Gumps/GumpImageTiled.cs
index ab62bcc55..4f5d14d71 100644
--- a/Projects/Server/Gumps/GumpImageTiled.cs
+++ b/Projects/Server/Gumps/GumpImageTiled.cs
@@ -39,7 +39,11 @@ public class GumpImageTiled : GumpEntry
 
     public int GumpID { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         writer.WriteAscii($"{{ gumppictiled {X} {Y} {Width} {Height} {GumpID} }}");
     }
diff --git a/Projects/Server/Gumps/GumpItem.cs b/Projects/Server/Gumps/GumpItem.cs
index 7ca97af42..f8a4e2d63 100644
--- a/Projects/Server/Gumps/GumpItem.cs
+++ b/Projects/Server/Gumps/GumpItem.cs
@@ -36,7 +36,11 @@ public class GumpItem : GumpEntry
 
     public int Hue { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         writer.WriteAscii(Hue == 0 ? $"{{ tilepic {X} {Y} {ItemID} }}" : $"{{ tilepichue {X} {Y} {ItemID} {Hue} }}");
     }
diff --git a/Projects/Server/Gumps/GumpItemProperty.cs b/Projects/Server/Gumps/GumpItemProperty.cs
index fc5c8fa94..3bf334b27 100644
--- a/Projects/Server/Gumps/GumpItemProperty.cs
+++ b/Projects/Server/Gumps/GumpItemProperty.cs
@@ -24,7 +24,11 @@ public class GumpItemProperty : GumpEntry
 
     public Serial Serial { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         writer.WriteAscii($"{{ itemproperty {Serial.Value} }}");
     }
diff --git a/Projects/Server/Gumps/GumpLabel.cs b/Projects/Server/Gumps/GumpLabel.cs
index 8299ec21b..4dbef6161 100644
--- a/Projects/Server/Gumps/GumpLabel.cs
+++ b/Projects/Server/Gumps/GumpLabel.cs
@@ -36,7 +36,11 @@ public class GumpLabel : GumpEntry
 
     public string Text { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         var textIndex = strings.GetOrAdd(Text ?? "");
         writer.WriteAscii($"{{ text {X} {Y} {Hue} {textIndex} }}");
diff --git a/Projects/Server/Gumps/GumpLabelCropped.cs b/Projects/Server/Gumps/GumpLabelCropped.cs
index ec1961f5d..831d6fd86 100644
--- a/Projects/Server/Gumps/GumpLabelCropped.cs
+++ b/Projects/Server/Gumps/GumpLabelCropped.cs
@@ -42,7 +42,11 @@ public class GumpLabelCropped : GumpEntry
 
     public string Text { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         var textIndex = strings.GetOrAdd(Text ?? "");
         writer.WriteAscii($"{{ croppedtext {X} {Y} {Width} {Height} {Hue} {textIndex} }}");
diff --git a/Projects/Server/Gumps/GumpMasterGump.cs b/Projects/Server/Gumps/GumpMasterGump.cs
index b37ed6aa4..45b3f3e53 100644
--- a/Projects/Server/Gumps/GumpMasterGump.cs
+++ b/Projects/Server/Gumps/GumpMasterGump.cs
@@ -24,7 +24,11 @@ public class GumpMasterGump : GumpEntry
 
     public int GumpID { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         writer.WriteAscii($"{{ mastergump {GumpID} }}");
     }
diff --git a/Projects/Server/Gumps/GumpPage.cs b/Projects/Server/Gumps/GumpPage.cs
index 1c8ae540a..7494336c7 100644
--- a/Projects/Server/Gumps/GumpPage.cs
+++ b/Projects/Server/Gumps/GumpPage.cs
@@ -26,7 +26,11 @@ public class GumpPage : GumpEntry
 
     public int Page { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         if (Page == 0)
         {
diff --git a/Projects/Server/Gumps/GumpRadio.cs b/Projects/Server/Gumps/GumpRadio.cs
index b5ad2506f..1a4cd7b2e 100644
--- a/Projects/Server/Gumps/GumpRadio.cs
+++ b/Projects/Server/Gumps/GumpRadio.cs
@@ -42,7 +42,11 @@ public class GumpRadio : GumpEntry
 
     public int SwitchID { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         var initialState = InitialState ? "1" : "0";
         writer.WriteAscii($"{{ radio {X} {Y} {InactiveID} {ActiveID} {initialState} {SwitchID} }}");
diff --git a/Projects/Server/Gumps/GumpSpriteImage.cs b/Projects/Server/Gumps/GumpSpriteImage.cs
index 953e3c29f..01d9a29bb 100644
--- a/Projects/Server/Gumps/GumpSpriteImage.cs
+++ b/Projects/Server/Gumps/GumpSpriteImage.cs
@@ -45,7 +45,11 @@ public class GumpSpriteImage : GumpEntry
 
     public int SY { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         writer.WriteAscii($"{{ picinpic {X} {Y} {GumpID} {Width} {Height} {SX} {SY} }}");
     }
diff --git a/Projects/Server/Gumps/GumpTextEntry.cs b/Projects/Server/Gumps/GumpTextEntry.cs
index f56ef77a4..0bc1d020a 100644
--- a/Projects/Server/Gumps/GumpTextEntry.cs
+++ b/Projects/Server/Gumps/GumpTextEntry.cs
@@ -45,7 +45,11 @@ public class GumpTextEntry : GumpEntry
 
     public string InitialText { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         var textIndex = strings.GetOrAdd(InitialText ?? "");
         writer.WriteAscii($"{{ textentry {X} {Y} {Width} {Height} {Hue} {EntryID} {textIndex} }}");
diff --git a/Projects/Server/Gumps/GumpTextEntryLimited.cs b/Projects/Server/Gumps/GumpTextEntryLimited.cs
index aebe6c08c..60b6a176d 100644
--- a/Projects/Server/Gumps/GumpTextEntryLimited.cs
+++ b/Projects/Server/Gumps/GumpTextEntryLimited.cs
@@ -50,7 +50,11 @@ public class GumpTextEntryLimited : GumpEntry
 
     public int Size { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         var textIndex = strings.GetOrAdd(InitialText ?? "");
         writer.WriteAscii($"{{ textentrylimited {X} {Y} {Width} {Height} {Hue} {EntryID} {textIndex} {Size} }}");
diff --git a/Projects/Server/Gumps/GumpTooltip.cs b/Projects/Server/Gumps/GumpTooltip.cs
index 4332c1d8d..3bf15b93b 100644
--- a/Projects/Server/Gumps/GumpTooltip.cs
+++ b/Projects/Server/Gumps/GumpTooltip.cs
@@ -32,7 +32,11 @@ public class GumpTooltip : GumpEntry
 
     public string Args { get; set; }
 
+#if NET7_SDK
+    public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, scoped ref int entries, scoped ref int switches)
+#else
     public override void AppendTo(ref SpanWriter writer, OrderedHashSet<string> strings, ref int entries, ref int switches)
+#endif
     {
         writer.WriteAscii(string.IsNullOrEmpty(Args) ? $"{{ tooltip {Number} }}" : $"{{ tooltip {Number} @{Args}@ }}");
     }
diff --git a/Projects/Server/Server.csproj b/Projects/Server/Server.csproj
index 99dc44f2e..db2d421d6 100755
--- a/Projects/Server/Server.csproj
+++ b/Projects/Server/Server.csproj
@@ -10,6 +10,7 @@
         <PublishDir>..\..\Distribution</PublishDir>
         <OutDir>..\..\Distribution</OutDir>
         <Version>0.0.0</Version>
+        <DefineConstants Condition="$([MSBuild]::VersionGreaterThanOrEquals('$(NETCoreSdkVersion)', '7.0'))">NET7_SDK</DefineConstants>
     </PropertyGroup>
     <Target Name="CleanPub" AfterTargets="Clean">
         <Message Text="Removing distribution files..." />
@@ -22,7 +23,6 @@
         <Delete Files="..\..\Distribution\$(AssemblyName).runtimeconfig.dev.json" ContinueOnError="true" />
         <Delete Files="..\..\Distribution\$(AssemblyName).runtimeconfig.json" ContinueOnError="true" />
         <Delete Files="..\..\Distribution\ModernUO.Serialization.Annotations.dll" ContinueOnError="true" />
-        <Delete Files="..\..\Distribution\ModernUO.SerializationGenerator.dll" ContinueOnError="true" />
         <Delete Files="..\..\Distribution\libz.dylib" ContinueOnError="true" />
         <Delete Files="..\..\Distribution\libz.so" ContinueOnError="true" />
         <Delete Files="..\..\Distribution\Microsoft.Toolkit.HighPerformance.dll" ContinueOnError="true" />
diff --git a/Projects/UOContent/UOContent.csproj b/Projects/UOContent/UOContent.csproj
index 65dd35736..824444eba 100755
--- a/Projects/UOContent/UOContent.csproj
+++ b/Projects/UOContent/UOContent.csproj
@@ -6,6 +6,7 @@
         <Product>ModernUO Content</Product>
         <PublishDir>..\..\Distribution\Assemblies</PublishDir>
         <OutDir>..\..\Distribution\Assemblies</OutDir>
+        <DefineConstants Condition="$([MSBuild]::VersionGreaterThanOrEquals('$(NETCoreSdkVersion)', '7.0'))">NET7_SDK</DefineConstants>
     </PropertyGroup>
     <Target Name="CleanPub" AfterTargets="Clean">
         <Message Text="Removing distribution assemblies..." />
@@ -33,6 +34,7 @@
         <Delete Files="..\..\Distribution\Assemblies\zstd" ContinueOnError="true" />
         <Delete Files="..\..\Distribution\Assemblies\zstd.exe" ContinueOnError="true" />
         <Delete Files="..\..\Distribution\Assemblies\Zstd.Binaries.dll" ContinueOnError="true" />
+        <Delete Files="..\..\Distribution\Assemblies\ModernUO.Serialization.Annotations.dll" ContinueOnError="true" />
     </Target>
     <ItemGroup>
         <ProjectReference Include="..\Server\Server.csproj" Private="false" PrivateAssets="All" IncludeAssets="None">
diff --git a/global.json b/global.json
new file mode 100644
index 000000000..d019e8b02
--- /dev/null
+++ b/global.json
@@ -0,0 +1,7 @@
+{
+  "sdk": {
+    "version": "6.0.400",
+    "rollForward": "latestMajor",
+    "allowPrerelease": false
+  }
+}
\ No newline at end of file