diff --git a/src/coreclr/src/System.Private.CoreLib/src/System/Type.CoreCLR.cs b/src/coreclr/src/System.Private.CoreLib/src/System/Type.CoreCLR.cs
index c81b37a4db7286..5bd6cc25797352 100644
--- a/src/coreclr/src/System.Private.CoreLib/src/System/Type.CoreCLR.cs
+++ b/src/coreclr/src/System.Private.CoreLib/src/System/Type.CoreCLR.cs
@@ -4,6 +4,7 @@
 using System.Diagnostics.CodeAnalysis;
 using System.Reflection;
 using System.Runtime.CompilerServices;
+using System.Runtime.Versioning;
 using StackCrawlMark = System.Threading.StackCrawlMark;
 
 namespace System
@@ -89,6 +90,7 @@ public bool IsInterface
         //   param progID:     the progID of the class to retrieve
         //   returns:          the class object associated to the progID
         ////
+        [SupportedOSPlatform("windows")]
         public static Type? GetTypeFromProgID(string progID, string? server, bool throwOnError)
         {
             return RuntimeType.GetTypeFromProgIDImpl(progID, server, throwOnError);
@@ -101,6 +103,7 @@ public bool IsInterface
         //   param CLSID:      the CLSID of the class to retrieve
         //   returns:          the class object associated to the CLSID
         ////
+        [SupportedOSPlatform("windows")]
         public static Type? GetTypeFromCLSID(Guid clsid, string? server, bool throwOnError)
         {
             return RuntimeType.GetTypeFromCLSIDImpl(clsid, server, throwOnError);
diff --git a/src/libraries/System.Private.CoreLib/src/System/Type.cs b/src/libraries/System.Private.CoreLib/src/System/Type.cs
index 4e32856efd48d5..743d3142605318 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Type.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Type.cs
@@ -7,6 +7,7 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 using System.Threading;
 
 namespace System
@@ -399,12 +400,18 @@ protected virtual TypeCode GetTypeCodeImpl()
 
         public abstract Guid GUID { get; }
 
+        [SupportedOSPlatform("windows")]
         public static Type? GetTypeFromCLSID(Guid clsid) => GetTypeFromCLSID(clsid, null, throwOnError: false);
+        [SupportedOSPlatform("windows")]
         public static Type? GetTypeFromCLSID(Guid clsid, bool throwOnError) => GetTypeFromCLSID(clsid, null, throwOnError: throwOnError);
+        [SupportedOSPlatform("windows")]
         public static Type? GetTypeFromCLSID(Guid clsid, string? server) => GetTypeFromCLSID(clsid, server, throwOnError: false);
 
+        [SupportedOSPlatform("windows")]
         public static Type? GetTypeFromProgID(string progID) => GetTypeFromProgID(progID, null, throwOnError: false);
+        [SupportedOSPlatform("windows")]
         public static Type? GetTypeFromProgID(string progID, bool throwOnError) => GetTypeFromProgID(progID, null, throwOnError: throwOnError);
+        [SupportedOSPlatform("windows")]
         public static Type? GetTypeFromProgID(string progID, string? server) => GetTypeFromProgID(progID, server, throwOnError: false);
 
         public abstract Type? BaseType { get; }
diff --git a/src/libraries/System.Runtime/ref/System.Runtime.cs b/src/libraries/System.Runtime/ref/System.Runtime.cs
index 43d7e040a7e107..9e739b2298f151 100644
--- a/src/libraries/System.Runtime/ref/System.Runtime.cs
+++ b/src/libraries/System.Runtime/ref/System.Runtime.cs
@@ -4325,14 +4325,22 @@ protected Type() { }
         public static System.Type[] GetTypeArray(object[] args) { throw null; }
         public static System.TypeCode GetTypeCode(System.Type? type) { throw null; }
         protected virtual System.TypeCode GetTypeCodeImpl() { throw null; }
+        [System.Runtime.Versioning.SupportedOSPlatformAttribute("windows")]
         public static System.Type? GetTypeFromCLSID(System.Guid clsid) { throw null; }
+        [System.Runtime.Versioning.SupportedOSPlatformAttribute("windows")]
         public static System.Type? GetTypeFromCLSID(System.Guid clsid, bool throwOnError) { throw null; }
+        [System.Runtime.Versioning.SupportedOSPlatformAttribute("windows")]
         public static System.Type? GetTypeFromCLSID(System.Guid clsid, string? server) { throw null; }
+        [System.Runtime.Versioning.SupportedOSPlatformAttribute("windows")]
         public static System.Type? GetTypeFromCLSID(System.Guid clsid, string? server, bool throwOnError) { throw null; }
         public static System.Type GetTypeFromHandle(System.RuntimeTypeHandle handle) { throw null; }
+        [System.Runtime.Versioning.SupportedOSPlatformAttribute("windows")]
         public static System.Type? GetTypeFromProgID(string progID) { throw null; }
+        [System.Runtime.Versioning.SupportedOSPlatformAttribute("windows")]
         public static System.Type? GetTypeFromProgID(string progID, bool throwOnError) { throw null; }
+        [System.Runtime.Versioning.SupportedOSPlatformAttribute("windows")]
         public static System.Type? GetTypeFromProgID(string progID, string? server) { throw null; }
+        [System.Runtime.Versioning.SupportedOSPlatformAttribute("windows")]
         public static System.Type? GetTypeFromProgID(string progID, string? server, bool throwOnError) { throw null; }
         public static System.RuntimeTypeHandle GetTypeHandle(object o) { throw null; }
         protected abstract bool HasElementTypeImpl();
diff --git a/src/mono/netcore/System.Private.CoreLib/src/System/Type.Mono.cs b/src/mono/netcore/System.Private.CoreLib/src/System/Type.Mono.cs
index 268d23b04fa3d5..ac3c8052fa896c 100644
--- a/src/mono/netcore/System.Private.CoreLib/src/System/Type.Mono.cs
+++ b/src/mono/netcore/System.Private.CoreLib/src/System/Type.Mono.cs
@@ -4,6 +4,7 @@
 using System.Reflection;
 using System.Diagnostics.CodeAnalysis;
 using System.Runtime.CompilerServices;
+using System.Runtime.Versioning;
 using System.Threading;
 
 namespace System
@@ -96,8 +97,10 @@ public static Type GetTypeFromHandle(RuntimeTypeHandle handle)
             return internal_from_handle(handle.Value);
         }
 
+        [SupportedOSPlatform("windows")]
         public static Type? GetTypeFromCLSID(Guid clsid, string? server, bool throwOnError) => throw new PlatformNotSupportedException();
 
+        [SupportedOSPlatform("windows")]
         public static Type? GetTypeFromProgID(string progID, string? server, bool throwOnError) => throw new PlatformNotSupportedException();
 
         internal virtual Type InternalResolve()