diff --git a/SafeExamBrowser.Browser/Handlers/DownloadHandler.cs b/SafeExamBrowser.Browser/Handlers/DownloadHandler.cs
index 6f843ec8..1590741f 100644
--- a/SafeExamBrowser.Browser/Handlers/DownloadHandler.cs
+++ b/SafeExamBrowser.Browser/Handlers/DownloadHandler.cs
@@ -44,12 +44,17 @@ namespace SafeExamBrowser.Browser.Handlers
 		public void OnBeforeDownload(IWebBrowser webBrowser, IBrowser browser, DownloadItem downloadItem, IBeforeDownloadCallback callback)
 		{
 			var uri = new Uri(downloadItem.Url);
-			var extension = Path.GetExtension(uri.AbsolutePath);
-			var isConfigFile = String.Equals(extension, appConfig.ConfigurationFileExtension, StringComparison.OrdinalIgnoreCase);
+			var uriExtension = Path.GetExtension(uri.AbsolutePath);
+			var fileExtension = Path.GetExtension(downloadItem.SuggestedFileName);
+			var isConfigurationFile = false;
+
+			isConfigurationFile |= string.Equals(appConfig.ConfigurationFileExtension, fileExtension, StringComparison.OrdinalIgnoreCase);
+			isConfigurationFile |= string.Equals(appConfig.ConfigurationFileExtension, uriExtension, StringComparison.OrdinalIgnoreCase);
+			isConfigurationFile |= string.Equals(appConfig.ConfigurationFileMimeType, downloadItem.MimeType, StringComparison.OrdinalIgnoreCase);
 
 			logger.Debug($"Detected download request for '{uri}'.");
 
-			if (isConfigFile)
+			if (isConfigurationFile)
 			{
 				Task.Run(() => RequestConfigurationFileDownload(downloadItem, callback));
 			}
diff --git a/SafeExamBrowser.Configuration.Contracts/AppConfig.cs b/SafeExamBrowser.Configuration.Contracts/AppConfig.cs
index df81f47b..322527f8 100644
--- a/SafeExamBrowser.Configuration.Contracts/AppConfig.cs
+++ b/SafeExamBrowser.Configuration.Contracts/AppConfig.cs
@@ -91,6 +91,11 @@ namespace SafeExamBrowser.Configuration.Contracts
 		/// </summary>
 		public string ConfigurationFileExtension { get; set; }
 
+		/// <summary>
+		/// The MIME type of configuration files for the application.
+		/// </summary>
+		public string ConfigurationFileMimeType { get; set; }
+
 		/// <summary>
 		/// The build version of the application.
 		/// </summary>
diff --git a/SafeExamBrowser.Configuration/ConfigurationData/DataValues.cs b/SafeExamBrowser.Configuration/ConfigurationData/DataValues.cs
index b1ed4eee..07a3227d 100644
--- a/SafeExamBrowser.Configuration/ConfigurationData/DataValues.cs
+++ b/SafeExamBrowser.Configuration/ConfigurationData/DataValues.cs
@@ -68,6 +68,7 @@ namespace SafeExamBrowser.Configuration.ConfigurationData
 			appConfig.ClientExecutablePath = Path.Combine(Path.GetDirectoryName(executablePath), $"{nameof(SafeExamBrowser)}.Client.exe");
 			appConfig.ClientLogFilePath = Path.Combine(logFolder, $"{logFilePrefix}_Client.log");
 			appConfig.ConfigurationFileExtension = ".seb";
+			appConfig.ConfigurationFileMimeType = "application/seb";
 			appConfig.ProgramBuildVersion = programBuild;
 			appConfig.ProgramCopyright = programCopyright;
 			appConfig.ProgramDataFilePath = Path.Combine(programDataFolder, DEFAULT_CONFIGURATION_NAME);