diff --git a/src/coreclr/System.Private.CoreLib/CompatibilitySuppressions.xml b/src/coreclr/System.Private.CoreLib/CompatibilitySuppressions.xml
index 97b65a2748409..480b91f128626 100644
--- a/src/coreclr/System.Private.CoreLib/CompatibilitySuppressions.xml
+++ b/src/coreclr/System.Private.CoreLib/CompatibilitySuppressions.xml
@@ -1,6 +1,22 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- https://learn.microsoft.com/en-us/dotnet/fundamentals/package-validation/diagnostic-ids -->
 <Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:Internal.Console</Target>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Runtime.CompilerServices.ICastable</Target>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>F:System.Resources.ResourceManager.BaseNameField</Target>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>F:System.Resources.ResourceSet.Reader</Target>
+  </Suppression>
   <Suppression>
     <DiagnosticId>CP0015</DiagnosticId>
     <Target>M:System.Diagnostics.Tracing.EventSource.Write``1(System.String,``0):[T:System.Diagnostics.CodeAnalysis.RequiresUnreferencedCodeAttribute]</Target>
@@ -29,4 +45,10 @@
     <DiagnosticId>CP0015</DiagnosticId>
     <Target>M:System.Diagnostics.Tracing.EventSource.WriteEventWithRelatedActivityIdCore(System.Int32,System.Guid*,System.Int32,System.Diagnostics.Tracing.EventSource.EventData*):[T:System.Diagnostics.CodeAnalysis.RequiresUnreferencedCodeAttribute]</Target>
   </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0016</DiagnosticId>
+    <Target>M:System.Reflection.Assembly.LoadFrom(System.String,System.Byte[],System.Configuration.Assemblies.AssemblyHashAlgorithm):[T:System.ObsoleteAttribute]</Target>
+    <Left>ref/net9.0/System.Private.CoreLib.dll</Left>
+    <Right>lib/net9.0/System.Private.CoreLib.dll</Right>
+  </Suppression>
 </Suppressions>
\ No newline at end of file
diff --git a/src/libraries/Common/src/System/Obsoletions.cs b/src/libraries/Common/src/System/Obsoletions.cs
index 3e68a4e3cd2de..318a466f84061 100644
--- a/src/libraries/Common/src/System/Obsoletions.cs
+++ b/src/libraries/Common/src/System/Obsoletions.cs
@@ -177,5 +177,8 @@ internal static class Obsoletions
 
         internal const string ArmIntrinsicPerformsUnsignedOperationMessage = "The underlying hardware instruction does not perform a signed saturate narrowing operation, and it always returns an unsigned result. Use the unsigned overload instead.";
         internal const string ArmIntrinsicPerformsUnsignedOperationDiagId = "SYSLIB0055";
+
+        internal const string LoadFromHashAlgorithmMessage = "LoadFrom with a custom AssemblyHashAlgorithm is obsolete. Use overloads without an AssemblyHashAlgorithm.";
+        internal const string LoadFromHashAlgorithmDiagId = "SYSLIB0056";
     }
 }
diff --git a/src/libraries/System.Private.CoreLib/src/System/Reflection/Assembly.cs b/src/libraries/System.Private.CoreLib/src/System/Reflection/Assembly.cs
index d467fd6fb0824..b8348d4bbfc22 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Reflection/Assembly.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Reflection/Assembly.cs
@@ -385,6 +385,7 @@ public static Assembly LoadFrom(string assemblyFile)
         }
 
         [RequiresUnreferencedCode("Types and members the loaded assembly depends on might be removed")]
+        [Obsolete(Obsoletions.LoadFromHashAlgorithmMessage, DiagnosticId = Obsoletions.LoadFromHashAlgorithmDiagId, UrlFormat = Obsoletions.SharedUrlFormat)]
         public static Assembly LoadFrom(string assemblyFile, byte[]? hashValue, AssemblyHashAlgorithm hashAlgorithm)
         {
             throw new NotSupportedException(SR.NotSupported_AssemblyLoadFromHash);