diff --git a/sdk/resourcemanager/Azure.ResourceManager/CHANGELOG.md b/sdk/resourcemanager/Azure.ResourceManager/CHANGELOG.md
index 561d8d68a3e6..4ecccb9cffd6 100644
--- a/sdk/resourcemanager/Azure.ResourceManager/CHANGELOG.md
+++ b/sdk/resourcemanager/Azure.ResourceManager/CHANGELOG.md
@@ -8,6 +8,8 @@
 
 ### Bugs Fixed
 
+- Fixed `ManagedServiceIdentity` deserialization when services return empty string for `principalId` or `tenantId`.
+
 ### Other Changes
 
 ## 1.4.0 (2023-02-10)
diff --git a/sdk/resourcemanager/Azure.ResourceManager/src/Common/Custom/Models/ManagedServiceIdentity.Serialization.cs b/sdk/resourcemanager/Azure.ResourceManager/src/Common/Custom/Models/ManagedServiceIdentity.Serialization.cs
index 76232548605a..cb5895995f7b 100644
--- a/sdk/resourcemanager/Azure.ResourceManager/src/Common/Custom/Models/ManagedServiceIdentity.Serialization.cs
+++ b/sdk/resourcemanager/Azure.ResourceManager/src/Common/Custom/Models/ManagedServiceIdentity.Serialization.cs
@@ -21,7 +21,7 @@ internal static void Write(Utf8JsonWriter writer, ManagedServiceIdentity model,
             JsonSerializer.Serialize(writer, model.ManagedServiceIdentityType, options);
             if (Optional.IsCollectionDefined(model.UserAssignedIdentities))
             {
-                writer.WritePropertyName("userAssignedIdentities");
+                writer.WritePropertyName("userAssignedIdentities"u8);
                 writer.WriteStartObject();
                 foreach (var item in model.UserAssignedIdentities)
                 {
@@ -48,9 +48,9 @@ internal static ManagedServiceIdentity DeserializeManagedServiceIdentity(JsonEle
             Optional<IDictionary<ResourceIdentifier, UserAssignedIdentity>> userAssignedIdentities = default;
             foreach (var property in element.EnumerateObject())
             {
-                if (property.NameEquals("principalId"))
+                if (property.NameEquals("principalId"u8))
                 {
-                    if (property.Value.ValueKind == JsonValueKind.Null)
+                    if (property.Value.ValueKind == JsonValueKind.Null || property.Value.GetString().Length == 0)
                     {
                         property.ThrowNonNullablePropertyIsNull();
                         continue;
@@ -58,9 +58,9 @@ internal static ManagedServiceIdentity DeserializeManagedServiceIdentity(JsonEle
                     principalId = property.Value.GetGuid();
                     continue;
                 }
-                if (property.NameEquals("tenantId"))
+                if (property.NameEquals("tenantId"u8))
                 {
-                    if (property.Value.ValueKind == JsonValueKind.Null)
+                    if (property.Value.ValueKind == JsonValueKind.Null || property.Value.GetString().Length == 0)
                     {
                         property.ThrowNonNullablePropertyIsNull();
                         continue;
@@ -68,12 +68,12 @@ internal static ManagedServiceIdentity DeserializeManagedServiceIdentity(JsonEle
                     tenantId = property.Value.GetGuid();
                     continue;
                 }
-                if (property.NameEquals("type"))
+                if (property.NameEquals("type"u8))
                 {
                     type = JsonSerializer.Deserialize<ManagedServiceIdentityType>("{"+property.ToString()+"}", options);
                     continue;
                 }
-                if (property.NameEquals("userAssignedIdentities"))
+                if (property.NameEquals("userAssignedIdentities"u8))
                 {
                     if (property.Value.ValueKind == JsonValueKind.Null)
                     {
diff --git a/sdk/resourcemanager/Azure.ResourceManager/tests/Unit/ManagedServiceIdentityTest.cs b/sdk/resourcemanager/Azure.ResourceManager/tests/Unit/ManagedServiceIdentityTest.cs
index ddef930fb319..a3540759d876 100644
--- a/sdk/resourcemanager/Azure.ResourceManager/tests/Unit/ManagedServiceIdentityTest.cs
+++ b/sdk/resourcemanager/Azure.ResourceManager/tests/Unit/ManagedServiceIdentityTest.cs
@@ -48,6 +48,18 @@ public void TestDeserializerInvalidType()
             Assert.AreEqual("77563a98-c9d9-4f7b-a7af-592d21fa2153", user.Values.First().PrincipalId.ToString());
         }
 
+        [TestCase]
+        public void TestDeserializerNoneWithEmptyStringIds()
+        {
+            var identityJsonProperty = DeserializerHelper("NoneEmptyStringIds.json");
+#if DEBUG
+            Assert.Throws<JsonException>(delegate { ManagedServiceIdentity.DeserializeManagedServiceIdentity(identityJsonProperty.Value); });
+#else
+            ManagedServiceIdentity back = ManagedServiceIdentity.DeserializeManagedServiceIdentity(identityJsonProperty.Value);
+            Assert.AreEqual(ManagedServiceIdentityType.None, back.ManagedServiceIdentityType);
+#endif
+        }
+
         [TestCase]
         public void TestDeserializerValidInnerExtraField()
         {
diff --git a/sdk/resourcemanager/Azure.ResourceManager/tests/Unit/TestAssets/Identity/NoneEmptyStringIds.json b/sdk/resourcemanager/Azure.ResourceManager/tests/Unit/TestAssets/Identity/NoneEmptyStringIds.json
new file mode 100644
index 000000000000..5064def489d3
--- /dev/null
+++ b/sdk/resourcemanager/Azure.ResourceManager/tests/Unit/TestAssets/Identity/NoneEmptyStringIds.json
@@ -0,0 +1,8 @@
+{
+    "identity": {
+      "principalId": "",
+      "tenantId": "",
+      "type": "None"
+    }
+  } 
+  
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