2 files changed, 5 insertions, 1 deletions
diff --git a/Emby.Server.Implementations/HttpServer/HttpResultFactory.cs b/Emby.Server.Implementations/HttpServer/HttpResultFactory.cs
index 464ca3a0b..2e9ecc4ae 100644
--- a/Emby.Server.Implementations/HttpServer/HttpResultFactory.cs
+++ b/Emby.Server.Implementations/HttpServer/HttpResultFactory.cs
@@ -426,7 +426,7 @@ namespace Emby.Server.Implementations.HttpServer
 
             if (!noCache)
             {
-                if (!DateTime.TryParseExact(requestContext.Headers[HeaderNames.IfModifiedSince], HttpDateFormat, _enUSculture, DateTimeStyles.AssumeUniversal, out var ifModifiedSinceHeader))
+                if (!DateTime.TryParseExact(requestContext.Headers[HeaderNames.IfModifiedSince], HttpDateFormat, _enUSculture, DateTimeStyles.AssumeUniversal | DateTimeStyles.AdjustToUniversal, out var ifModifiedSinceHeader))
                 {
                     _logger.LogDebug("Failed to parse If-Modified-Since header date: {0}", requestContext.Headers[HeaderNames.IfModifiedSince]);
                     return null;
diff --git a/Emby.Server.Implementations/HttpServer/ResponseFilter.cs b/Emby.Server.Implementations/HttpServer/ResponseFilter.cs
index 5e0466629..4089aa578 100644
--- a/Emby.Server.Implementations/HttpServer/ResponseFilter.cs
+++ b/Emby.Server.Implementations/HttpServer/ResponseFilter.cs
@@ -82,6 +82,10 @@ namespace Emby.Server.Implementations.HttpServer
             {
                 return null;
             }
+            else if (inString.Length == 0)
+            {
+                return inString;
+            }
 
             var newString = new StringBuilder(inString.Length);