diff --git a/src/Tgstation.Server.Host/Components/Deployment/SymlinkDmbProvider.cs b/src/Tgstation.Server.Host/Components/Deployment/SymlinkDmbProvider.cs
index 2edc58d37e..0054e7fa4b 100644
--- a/src/Tgstation.Server.Host/Components/Deployment/SymlinkDmbProvider.cs
+++ b/src/Tgstation.Server.Host/Components/Deployment/SymlinkDmbProvider.cs
@@ -1,4 +1,5 @@
-using System.Threading;
+using System.Runtime.Versioning;
+using System.Threading;
 using System.Threading.Tasks;
 
 using Tgstation.Server.Host.IO;
@@ -8,6 +9,7 @@ namespace Tgstation.Server.Host.Components.Deployment
 	/// <summary>
 	/// A <see cref="IDmbProvider"/> that uses symlinks.
 	/// </summary>
+	[SupportedOSPlatform("windows")]
 	sealed class SymlinkDmbProvider : SwappableDmbProvider
 	{
 		/// <summary>
diff --git a/src/Tgstation.Server.Host/Components/Watchdog/PosixWatchdog.cs b/src/Tgstation.Server.Host/Components/Watchdog/PosixWatchdog.cs
index 2fb5ad1d54..818dea9d7c 100644
--- a/src/Tgstation.Server.Host/Components/Watchdog/PosixWatchdog.cs
+++ b/src/Tgstation.Server.Host/Components/Watchdog/PosixWatchdog.cs
@@ -22,6 +22,7 @@ namespace Tgstation.Server.Host.Components.Watchdog
 	/// <summary>
 	/// A variant of the <see cref="AdvancedWatchdog"/> that works on POSIX systems.
 	/// </summary>
+	[UnsupportedOSPlatform("windows")]
 	sealed class PosixWatchdog : AdvancedWatchdog
 	{
 		/// <summary>
diff --git a/src/Tgstation.Server.Host/Components/Watchdog/PosixWatchdogFactory.cs b/src/Tgstation.Server.Host/Components/Watchdog/PosixWatchdogFactory.cs
index 64c8672262..1d0d140bc0 100644
--- a/src/Tgstation.Server.Host/Components/Watchdog/PosixWatchdogFactory.cs
+++ b/src/Tgstation.Server.Host/Components/Watchdog/PosixWatchdogFactory.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Runtime.Versioning;
 
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
@@ -20,6 +21,7 @@ namespace Tgstation.Server.Host.Components.Watchdog
 	/// <summary>
 	/// <see cref="IWatchdogFactory"/> for creating <see cref="PosixWatchdog"/>s.
 	/// </summary>
+	[UnsupportedOSPlatform("windows")]
 	sealed class PosixWatchdogFactory : WindowsWatchdogFactory
 	{
 		/// <summary>
diff --git a/src/Tgstation.Server.Host/Components/Watchdog/WindowsWatchdog.cs b/src/Tgstation.Server.Host/Components/Watchdog/WindowsWatchdog.cs
index 05c1f10088..8ff6bf3362 100644
--- a/src/Tgstation.Server.Host/Components/Watchdog/WindowsWatchdog.cs
+++ b/src/Tgstation.Server.Host/Components/Watchdog/WindowsWatchdog.cs
@@ -1,4 +1,5 @@
-using System.Threading;
+using System.Runtime.Versioning;
+using System.Threading;
 using System.Threading.Tasks;
 
 using Microsoft.Extensions.Logging;
@@ -19,6 +20,7 @@ namespace Tgstation.Server.Host.Components.Watchdog
 	/// <summary>
 	/// A variant of the <see cref="AdvancedWatchdog"/> that works on Windows systems.
 	/// </summary>
+	[SupportedOSPlatform("windows")]
 	sealed class WindowsWatchdog : AdvancedWatchdog
 	{
 		/// <summary>
diff --git a/src/Tgstation.Server.Host/Components/Watchdog/WindowsWatchdogFactory.cs b/src/Tgstation.Server.Host/Components/Watchdog/WindowsWatchdogFactory.cs
index 89ed6b145d..0888294aa4 100644
--- a/src/Tgstation.Server.Host/Components/Watchdog/WindowsWatchdogFactory.cs
+++ b/src/Tgstation.Server.Host/Components/Watchdog/WindowsWatchdogFactory.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Runtime.Versioning;
 
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
@@ -20,6 +21,7 @@ namespace Tgstation.Server.Host.Components.Watchdog
 	/// <summary>
 	/// <see cref="IWatchdogFactory"/> for creating <see cref="AdvancedWatchdog"/>s.
 	/// </summary>
+	[SupportedOSPlatform("windows")]
 	class WindowsWatchdogFactory : WatchdogFactory
 	{
 		/// <summary>