diff --git a/Snowflake.Data.Tests/UnitTests/SnowflakeTomlConnectionBuilderTest.cs b/Snowflake.Data.Tests/UnitTests/SnowflakeTomlConnectionBuilderTest.cs
index 370ae8cec..24c2cb259 100644
--- a/Snowflake.Data.Tests/UnitTests/SnowflakeTomlConnectionBuilderTest.cs
+++ b/Snowflake.Data.Tests/UnitTests/SnowflakeTomlConnectionBuilderTest.cs
@@ -3,6 +3,7 @@
  */
 
 using Mono.Unix;
+using Snowflake.Data.Client;
 
 namespace Snowflake.Data.Tests.UnitTests
 {
@@ -309,7 +310,7 @@ public void TestConnectionWithOauthAuthenticatorTokenFromFile()
         }
 
         [Test]
-        public void TestConnectionWithOauthAuthenticatorFromDefaultIfTokenFilePathNotExists()
+        public void TestConnectionWithOauthAuthenticatorThrowsExceptionIfTokenFilePathNotExists()
         {
             // Arrange
             var tokenFilePath = "/Users/testuser/token";
@@ -337,11 +338,9 @@ public void TestConnectionWithOauthAuthenticatorFromDefaultIfTokenFilePathNotExi
 
             var reader = new TomlConnectionBuilder(mockFileOperations.Object, mockEnvironmentOperations.Object);
 
-            // Act
-            var connectionString = reader.GetConnectionStringFromToml();
-
-            // Assert
-            Assert.AreEqual($"account=testaccountname;authenticator=oauth;token={defaultToken};", connectionString);
+            // Act and assert
+            var exception = Assert.Throws<SnowflakeDbException>(() => reader.GetConnectionStringFromToml());
+            Assert.IsTrue(exception.Message.StartsWith("Error: Invalid parameter value /Users/testuser/token for token_file_path"));
         }
 
         [Test]
diff --git a/Snowflake.Data/Core/TomlConnectionBuilder.cs b/Snowflake.Data/Core/TomlConnectionBuilder.cs
index 038deb706..61acbd83a 100644
--- a/Snowflake.Data/Core/TomlConnectionBuilder.cs
+++ b/Snowflake.Data/Core/TomlConnectionBuilder.cs
@@ -99,7 +99,21 @@ private void AppendTokenFromFileIfNotGivenExplicitly(TomlTable connectionToml, b
 
         private string LoadTokenFromFile(string tokenFilePathValue)
         {
-            var tokenFile = !string.IsNullOrEmpty(tokenFilePathValue) && _fileOperations.Exists(tokenFilePathValue) ? tokenFilePathValue : DefaultTokenPath;
+            string tokenFile;
+            if(string.IsNullOrEmpty(tokenFilePathValue))
+            {
+                tokenFile = DefaultTokenPath;
+            }
+            else
+            {
+                if (!_fileOperations.Exists(tokenFilePathValue))
+                {
+                    s_logger.Debug($"Specified file {tokenFilePathValue} does not exists.");
+                    throw new SnowflakeDbException(SFError.INVALID_CONNECTION_PARAMETER_VALUE, tokenFilePathValue, "token_file_path");
+                }
+
+                tokenFile = tokenFilePathValue;
+            }
             s_logger.Debug($"Read token from file path: {tokenFile}");
             return _fileOperations.Exists(tokenFile) ? _fileOperations.ReadAllText(tokenFile, ValidateFilePermissions) : null;
         }