diff --git a/src/Momento.Sdk/Internal/AuthGrpcManager.cs b/src/Momento.Sdk/Internal/AuthGrpcManager.cs
index 854c874e..623a2983 100644
--- a/src/Momento.Sdk/Internal/AuthGrpcManager.cs
+++ b/src/Momento.Sdk/Internal/AuthGrpcManager.cs
@@ -74,6 +74,9 @@ public AuthGrpcManager(IAuthConfiguration config, string authToken, string endpo
         }
 
         channelOptions.Credentials = ChannelCredentials.SecureSsl;
+        channelOptions.MaxReceiveMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE;
+        channelOptions.MaxSendMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE;
+
 #if USE_GRPC_WEB
         channelOptions.HttpHandler = new GrpcWebHandler(new HttpClientHandler());
 #endif
diff --git a/src/Momento.Sdk/Internal/ControlGrpcManager.cs b/src/Momento.Sdk/Internal/ControlGrpcManager.cs
index bbcac40d..7a1bdbfd 100644
--- a/src/Momento.Sdk/Internal/ControlGrpcManager.cs
+++ b/src/Momento.Sdk/Internal/ControlGrpcManager.cs
@@ -96,8 +96,10 @@ public ControlGrpcManager(ILoggerFactory loggerFactory, string authToken, string
         this.channel = GrpcChannel.ForAddress(uri, new GrpcChannelOptions()
         {
             Credentials = ChannelCredentials.SecureSsl,
+            MaxReceiveMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE,
+            MaxSendMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE,
 #if USE_GRPC_WEB
-            HttpHandler = new GrpcWebHandler(new HttpClientHandler())
+            HttpHandler = new GrpcWebHandler(new HttpClientHandler()),
 #endif
         });
         List<Header> headers = new List<Header> { new Header(name: Header.AuthorizationKey, value: authToken), new Header(name: Header.AgentKey, value: version), new Header(name: Header.RuntimeVersionKey, value: runtimeVersion) };
diff --git a/src/Momento.Sdk/Internal/DataGrpcManager.cs b/src/Momento.Sdk/Internal/DataGrpcManager.cs
index 06d3eeff..5f7444ef 100644
--- a/src/Momento.Sdk/Internal/DataGrpcManager.cs
+++ b/src/Momento.Sdk/Internal/DataGrpcManager.cs
@@ -280,6 +280,9 @@ internal DataGrpcManager(IConfiguration config, string authToken, string endpoin
             channelOptions.LoggerFactory = config.LoggerFactory;
         }
         channelOptions.Credentials = ChannelCredentials.SecureSsl;
+        channelOptions.MaxReceiveMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE;
+        channelOptions.MaxSendMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE;
+        
 #if USE_GRPC_WEB
         channelOptions.HttpHandler = new GrpcWebHandler(new HttpClientHandler());
 #endif
diff --git a/src/Momento.Sdk/Internal/TopicGrpcManager.cs b/src/Momento.Sdk/Internal/TopicGrpcManager.cs
index bd34c4e6..f2753af5 100644
--- a/src/Momento.Sdk/Internal/TopicGrpcManager.cs
+++ b/src/Momento.Sdk/Internal/TopicGrpcManager.cs
@@ -100,6 +100,9 @@ internal TopicGrpcManager(ITopicConfiguration config, string authToken, string e
         }
 
         channelOptions.Credentials = ChannelCredentials.SecureSsl;
+        channelOptions.MaxReceiveMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE;
+        channelOptions.MaxSendMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE;
+
 #if USE_GRPC_WEB
         channelOptions.HttpHandler = new GrpcWebHandler(new HttpClientHandler());
 #endif
diff --git a/src/Momento.Sdk/Internal/Utils.cs b/src/Momento.Sdk/Internal/Utils.cs
index 664e8cad..c40ad355 100644
--- a/src/Momento.Sdk/Internal/Utils.cs
+++ b/src/Momento.Sdk/Internal/Utils.cs
@@ -13,6 +13,11 @@ namespace Momento.Sdk.Internal;
 /// </summary>
 public static class Utils
 {
+    /// <summary>
+    /// The default value for max_send_message_length is 4mb.  We need to increase this to 5mb in order to support cases where users have requested a limit increase up to our maximum item size of 5mb.
+    /// </summary>
+    public const int DEFAULT_MAX_MESSAGE_SIZE = 5_243_000;
+
     /// <summary>
     /// Convert a UTF-8 encoded string to a byte array.
     /// </summary>
diff --git a/src/Momento.Sdk/Internal/VectorIndexControlGrpcManager.cs b/src/Momento.Sdk/Internal/VectorIndexControlGrpcManager.cs
index 30506154..c7dbb7ae 100644
--- a/src/Momento.Sdk/Internal/VectorIndexControlGrpcManager.cs
+++ b/src/Momento.Sdk/Internal/VectorIndexControlGrpcManager.cs
@@ -91,7 +91,9 @@ internal VectorIndexControlGrpcManager(ILoggerFactory loggerFactory, string auth
         var channelOptions = new GrpcChannelOptions
         {
             LoggerFactory = loggerFactory,
-            Credentials = ChannelCredentials.SecureSsl
+            Credentials = ChannelCredentials.SecureSsl,
+            MaxReceiveMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE,
+            MaxSendMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE,
         };
 #if USE_GRPC_WEB
         channelOptions.HttpHandler = new GrpcWebHandler(new HttpClientHandler());
diff --git a/src/Momento.Sdk/Internal/VectorIndexDataGrpcManager.cs b/src/Momento.Sdk/Internal/VectorIndexDataGrpcManager.cs
index ff21ceee..981ca690 100644
--- a/src/Momento.Sdk/Internal/VectorIndexDataGrpcManager.cs
+++ b/src/Momento.Sdk/Internal/VectorIndexDataGrpcManager.cs
@@ -118,6 +118,9 @@ internal VectorIndexDataGrpcManager(IVectorIndexConfiguration config, string aut
         var channelOptions = config.TransportStrategy.GrpcConfig.GrpcChannelOptions;
         channelOptions.LoggerFactory ??= config.LoggerFactory;
         channelOptions.Credentials = ChannelCredentials.SecureSsl;
+        channelOptions.MaxReceiveMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE;
+        channelOptions.MaxSendMessageSize = Internal.Utils.DEFAULT_MAX_MESSAGE_SIZE;
+
 #if USE_GRPC_WEB
         channelOptions.HttpHandler = new GrpcWebHandler(new HttpClientHandler());
 #endif