diff --git a/src/Microsoft.SqlTools.ServiceLayer/Connection/ConnectionService.cs b/src/Microsoft.SqlTools.ServiceLayer/Connection/ConnectionService.cs
index 14802cd7..42a9520e 100644
--- a/src/Microsoft.SqlTools.ServiceLayer/Connection/ConnectionService.cs
+++ b/src/Microsoft.SqlTools.ServiceLayer/Connection/ConnectionService.cs
@@ -1428,6 +1428,10 @@ namespace Microsoft.SqlTools.ServiceLayer.Connection
                 switch (connectionDetails.SecureEnclaves.ToUpper())
                 {
                     case "ENABLED":
+                        if (string.IsNullOrEmpty(connectionDetails.EnclaveAttestationProtocol))
+                        {
+                            throw new ArgumentException(SR.ConnectionServiceConnStringMissingAttestationProtocolWithSecureEnclaves);
+                        }
                         break;
                     case "DISABLED":
                         break;
diff --git a/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.cs b/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.cs
index 9ee86910..5e4eef0f 100644
--- a/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.cs
+++ b/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.cs
@@ -45,6 +45,14 @@ namespace Microsoft.SqlTools.ServiceLayer
             }
         }
 
+        public static string ConnectionServiceConnStringMissingAttestationProtocolWithSecureEnclaves
+        {
+            get
+            {
+                return Keys.GetString(Keys.ConnectionServiceConnStringMissingAttestationProtocolWithSecureEnclaves);
+            }
+        }
+
         public static string ConnectionServiceConnStringMissingAttestationUrlWithAttestationProtocol
         {
             get
@@ -10190,6 +10198,9 @@ namespace Microsoft.SqlTools.ServiceLayer
             public const string ConnectionServiceConnStringInvalidEnclaveAttestationProtocol = "ConnectionServiceConnStringInvalidEnclaveAttestationProtocol";
 
 
+            public const string ConnectionServiceConnStringMissingAttestationProtocolWithSecureEnclaves = "ConnectionServiceConnStringMissingAttestationProtocolWithSecureEnclaves";
+
+
             public const string ConnectionServiceConnStringMissingAttestationUrlWithAttestationProtocol = "ConnectionServiceConnStringMissingAttestationUrlWithAttestationProtocol";
 
 
diff --git a/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.resx b/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.resx
index 7e90bc48..e5e6653f 100644
--- a/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.resx
+++ b/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.resx
@@ -146,7 +146,7 @@
  Parameters: 0 - columnEncryptionSetting (string) </comment>
   </data>
   <data name="ConnectionServiceConnStringInvalidSecureEnclaves" xml:space="preserve">
-    <value>Invalid value &apos;{0}&apos; for SecureEnclaves. Valid values are &apos;Enabled&apos; and &apos;Disabled&apos;.</value>
+    <value>Invalid value &apos;{0}&apos; for Secure enclaves. Valid values are &apos;Enabled&apos; and &apos;Disabled&apos;.</value>
     <comment>.
  Parameters: 0 - secureEnclaves (string) </comment>
   </data>
@@ -156,20 +156,24 @@
  Parameters: 0 - encrypt (string) </comment>
   </data>
   <data name="ConnectionServiceConnStringInvalidEnclaveAttestationProtocol" xml:space="preserve">
-    <value>Invalid value &apos;{0}&apos; for EnclaveAttestationProtocol. Valid values are &apos;AAS&apos;, &apos;HGS&apos; and &apos;None&apos;.</value>
+    <value>Invalid value &apos;{0}&apos; for Attestation protocol. Valid values are &apos;AAS&apos;, &apos;HGS&apos; and &apos;None&apos;.</value>
     <comment>.
  Parameters: 0 - enclaveAttestationProtocol (string) </comment>
   </data>
+  <data name="ConnectionServiceConnStringMissingAttestationProtocolWithSecureEnclaves" xml:space="preserve">
+    <value>Attestation protocol cannot be empty with Secure enclaves enabled.</value>
+    <comment></comment>
+  </data>
   <data name="ConnectionServiceConnStringMissingAttestationUrlWithAttestationProtocol" xml:space="preserve">
-    <value>Attestation URL cannot be empty with the selected value of Attestation Protocol.</value>
+    <value>Attestation URL cannot be empty with the selected value of Attestation protocol.</value>
     <comment></comment>
   </data>
   <data name="ConnectionServiceConnStringInvalidAlwaysEncryptedOptionCombination" xml:space="preserve">
-    <value>The Attestation Protocol and Enclave Attestation URL requires Always Encrypted with Secure Enclaves to be set to Enabled.</value>
+    <value>The Attestation protocol and Attestation URL requires Always Encrypted with Secure enclaves to be set to Enabled.</value>
     <comment></comment>
   </data>
   <data name="ConnectionServiceConnStringInvalidAttestationProtocolNoneWithUrl" xml:space="preserve">
-    <value>The Enclave Attestation URL must not be specified with Attestation Protocol &apos;None&apos;. Either set appropriate Attestation Protocol or remove Attestation URL from connection properties.</value>
+    <value>The Attestation URL must not be specified with Attestation protocol &apos;None&apos;. Either set appropriate Attestation protocol or remove Attestation URL from connection properties.</value>
     <comment></comment>
   </data>
   <data name="ConnectionServiceConnStringInvalidIntent" xml:space="preserve">
diff --git a/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.strings b/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.strings
index 3e8915f6..c2875174 100644
--- a/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.strings
+++ b/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.strings
@@ -35,17 +35,19 @@ ConnectionServiceConnStringInvalidAuthType(string authType) = Invalid value '{0}
 
 ConnectionServiceConnStringInvalidColumnEncryptionSetting(string columnEncryptionSetting) = Invalid value '{0}' for ComlumEncryption. Valid values are 'Enabled' and 'Disabled'.
 
-ConnectionServiceConnStringInvalidSecureEnclaves(string secureEnclaves) = Invalid value '{0}' for SecureEnclaves. Valid values are 'Enabled' and 'Disabled'.
+ConnectionServiceConnStringInvalidSecureEnclaves(string secureEnclaves) = Invalid value '{0}' for Secure enclaves. Valid values are 'Enabled' and 'Disabled'.
 
 ConnectionServiceConnStringInvalidEncryptOption(string encrypt) = Invalid value '{0}' for Encrypt. Valid values are 'Optional', 'Mandatory', 'Strict', 'True', 'False', 'Yes' and 'No'.
 
-ConnectionServiceConnStringInvalidEnclaveAttestationProtocol(string enclaveAttestationProtocol) = Invalid value '{0}' for EnclaveAttestationProtocol. Valid values are 'AAS', 'HGS' and 'None'.
+ConnectionServiceConnStringInvalidEnclaveAttestationProtocol(string enclaveAttestationProtocol) = Invalid value '{0}' for Attestation protocol. Valid values are 'AAS', 'HGS' and 'None'.
 
-ConnectionServiceConnStringMissingAttestationUrlWithAttestationProtocol = Attestation URL cannot be empty with the selected value of Attestation Protocol.
+ConnectionServiceConnStringMissingAttestationProtocolWithSecureEnclaves = Attestation protocol cannot be empty with Secure enclaves enabled.
 
-ConnectionServiceConnStringInvalidAlwaysEncryptedOptionCombination = The Attestation Protocol and Enclave Attestation URL requires Always Encrypted with Secure Enclaves to be set to Enabled.
+ConnectionServiceConnStringMissingAttestationUrlWithAttestationProtocol = Attestation URL cannot be empty with the selected value of Attestation protocol.
 
-ConnectionServiceConnStringInvalidAttestationProtocolNoneWithUrl = The Enclave Attestation URL must not be specified with Attestation Protocol 'None'. Either set appropriate Attestation Protocol or remove Attestation URL from connection properties.
+ConnectionServiceConnStringInvalidAlwaysEncryptedOptionCombination = The Attestation protocol and Attestation URL requires Always Encrypted with Secure enclaves to be set to Enabled.
+
+ConnectionServiceConnStringInvalidAttestationProtocolNoneWithUrl = The Attestation URL must not be specified with Attestation protocol 'None'. Either set appropriate Attestation protocol or remove Attestation URL from connection properties.
 
 ConnectionServiceConnStringInvalidIntent(string intent) = Invalid value '{0}' for ApplicationIntent. Valid values are 'ReadWrite' and 'ReadOnly'.
 
diff --git a/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.xlf b/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.xlf
index 4a53a51e..3ed72691 100644
--- a/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.xlf
+++ b/src/Microsoft.SqlTools.ServiceLayer/Localization/sr.xlf
@@ -2042,14 +2042,14 @@
  Parameters: 0 - encrypt (string) </note>
       </trans-unit>
       <trans-unit id="ConnectionServiceConnStringInvalidEnclaveAttestationProtocol">
-        <source>Invalid value '{0}' for EnclaveAttestationProtocol. Valid values are 'AAS', 'HGS' and 'None'.</source>
-        <target state="new">Invalid value '{0}' for EnclaveAttestationProtocol. Valid values are 'AAS', 'HGS' and 'None'.</target>
+        <source>Invalid value '{0}' for Attestation protocol. Valid values are 'AAS', 'HGS' and 'None'.</source>
+        <target state="new">Invalid value '{0}' for Attestation protocol. Valid values are 'AAS', 'HGS' and 'None'.</target>
         <note>.
  Parameters: 0 - enclaveAttestationProtocol (string) </note>
       </trans-unit>
       <trans-unit id="ConnectionServiceConnStringInvalidAlwaysEncryptedOptionCombination">
-        <source>The Attestation Protocol and Enclave Attestation URL requires Always Encrypted with Secure Enclaves to be set to Enabled.</source>
-        <target state="new">The Attestation Protocol and Enclave Attestation URL requires Always Encrypted with Secure Enclaves to be set to Enabled.</target>
+        <source>The Attestation protocol and Attestation URL requires Always Encrypted with Secure enclaves to be set to Enabled.</source>
+        <target state="new">The Attestation protocol and Attestation URL requires Always Encrypted with Secure enclaves to be set to Enabled.</target>
         <note></note>
       </trans-unit>
       <trans-unit id="SqlCmdExitOnError">
@@ -6551,19 +6551,19 @@ The Query Processor estimates that implementing the following index could improv
         <note></note>
       </trans-unit>
       <trans-unit id="ConnectionServiceConnStringMissingAttestationUrlWithAttestationProtocol">
-        <source>Attestation URL cannot be empty with the selected value of Attestation Protocol.</source>
-        <target state="new">Attestation URL cannot be empty with the selected value of Attestation Protocol.</target>
+        <source>Attestation URL cannot be empty with the selected value of Attestation protocol.</source>
+        <target state="new">Attestation URL cannot be empty with the selected value of Attestation protocol.</target>
         <note></note>
       </trans-unit>
       <trans-unit id="ConnectionServiceConnStringInvalidSecureEnclaves">
-        <source>Invalid value '{0}' for SecureEnclaves. Valid values are 'Enabled' and 'Disabled'.</source>
-        <target state="new">Invalid value '{0}' for SecureEnclaves. Valid values are 'Enabled' and 'Disabled'.</target>
+        <source>Invalid value '{0}' for Secure enclaves. Valid values are 'Enabled' and 'Disabled'.</source>
+        <target state="new">Invalid value '{0}' for Secure enclaves. Valid values are 'Enabled' and 'Disabled'.</target>
         <note>.
  Parameters: 0 - secureEnclaves (string) </note>
       </trans-unit>
       <trans-unit id="ConnectionServiceConnStringInvalidAttestationProtocolNoneWithUrl">
-        <source>The Enclave Attestation URL must not be specified with Attestation Protocol 'None'. Either set appropriate Attestation Protocol or remove Attestation URL from connection properties.</source>
-        <target state="new">The Enclave Attestation URL must not be specified with Attestation Protocol 'None'. Either set appropriate Attestation Protocol or remove Attestation URL from connection properties.</target>
+        <source>The Attestation URL must not be specified with Attestation protocol 'None'. Either set appropriate Attestation protocol or remove Attestation URL from connection properties.</source>
+        <target state="new">The Attestation URL must not be specified with Attestation protocol 'None'. Either set appropriate Attestation protocol or remove Attestation URL from connection properties.</target>
         <note></note>
       </trans-unit>
       <trans-unit id="DefaultLanguagePlaceholder">
@@ -6582,6 +6582,11 @@ The Query Processor estimates that implementing the following index could improv
         <note>.
  Parameters: 0 - urn (string) </note>
       </trans-unit>
+      <trans-unit id="ConnectionServiceConnStringMissingAttestationProtocolWithSecureEnclaves">
+        <source>Attestation protocol cannot be empty with Secure enclaves enabled.</source>
+        <target state="new">Attestation protocol cannot be empty with Secure enclaves enabled.</target>
+        <note></note>
+      </trans-unit>
     </body>
   </file>
 </xliff>
\ No newline at end of file
diff --git a/test/Microsoft.SqlTools.ServiceLayer.UnitTests/Utility/SrTests.cs b/test/Microsoft.SqlTools.ServiceLayer.UnitTests/Utility/SrTests.cs
index 585653a4..2fc1d0e4 100644
--- a/test/Microsoft.SqlTools.ServiceLayer.UnitTests/Utility/SrTests.cs
+++ b/test/Microsoft.SqlTools.ServiceLayer.UnitTests/Utility/SrTests.cs
@@ -37,6 +37,7 @@ namespace Microsoft.SqlTools.ServiceLayer.UnitTests.Utility
             Assert.NotNull(ServiceLayerSr.ConnectionServiceConnectionCanceled);
             Assert.NotNull(ServiceLayerSr.ConnectionServiceConnStringMissingAttestationUrlWithAttestationProtocol);
             Assert.NotNull(ServiceLayerSr.ConnectionServiceConnStringInvalidAttestationProtocolNoneWithUrl);
+            Assert.NotNull(ServiceLayerSr.ConnectionServiceConnStringMissingAttestationProtocolWithSecureEnclaves);
             Assert.NotNull(ServiceLayerSr.ConnectionServiceConnStringInvalidEnclaveAttestationProtocol(""));
             Assert.NotNull(ServiceLayerSr.ConnectionServiceConnStringInvalidColumnEncryptionSetting(""));
             Assert.NotNull(ServiceLayerSr.ConnectionServiceConnStringInvalidSecureEnclaves(""));