diff --git a/src/Readme.txt b/src/Readme.txt
index b8881129..21c96615 100644
--- a/src/Readme.txt
+++ b/src/Readme.txt
@@ -69,6 +69,7 @@ CHANGELOG
 
 5.3.5.0
 
+    * New: #663: Improved support for Cobertura files generated by "Microsoft CodeCoverage"
     * New: #674: License can now be supplied via the REPORTGENERATOR_LICENSE environment variable
 
 5.3.4.0
diff --git a/src/ReportGenerator.Core/Parser/CoberturaParser.cs b/src/ReportGenerator.Core/Parser/CoberturaParser.cs
index adf33375..796e661f 100644
--- a/src/ReportGenerator.Core/Parser/CoberturaParser.cs
+++ b/src/ReportGenerator.Core/Parser/CoberturaParser.cs
@@ -153,6 +153,12 @@ private Assembly ProcessAssembly(XElement[] modules, string assemblyName)
 
                     if (fullname.Contains("<"))
                     {
+                        if (fullname.Contains("__")
+                            || fullname.Contains(".<>"))
+                        {
+                            return Tuple.Create(string.Empty, string.Empty);
+                        }
+
                         var match = AsyncClassRegex.Match(fullname);
 
                         if (match.Success)
@@ -166,7 +172,8 @@ private Assembly ProcessAssembly(XElement[] modules, string assemblyName)
                     return Tuple.Create(fullname, fullname);
                 })
                 .Where(c => this.RawMode
-                    || (!c.Item1.Contains("$")
+                    || (c.Item1 != string.Empty
+                        && !c.Item1.Contains("$")
                         && (!c.Item1.Contains("<") || GenericClassRegex.IsMatch(c.Item1))))
                 .Distinct()
                 .Where(c => this.ClassFilter.IsElementIncludedInReport(c.Item1))