diff --git a/Build/python/mtm/util/SystemHelper.py b/Build/python/mtm/util/SystemHelper.py
index 9ebfbff99..02521ddc0 100644
--- a/Build/python/mtm/util/SystemHelper.py
+++ b/Build/python/mtm/util/SystemHelper.py
@@ -191,7 +191,7 @@ def deleteDirectoryWaitIfNecessary(self, dirPath):
 
     def deleteDirectory(self, dirPath):
         dirPath = self._varManager.expand(dirPath)
-        shutil.rmtree(dirPath)
+        os.system('rmdir /S /Q "{0}"'.format(dirPath))
 
     def deleteDirectoryIfExists(self, dirPath):
         dirPath = self._varManager.expand(dirPath)
diff --git a/Build/python/mtm/zen/CreateRelease.py b/Build/python/mtm/zen/CreateRelease.py
index d005d9ec6..d16f9aee7 100644
--- a/Build/python/mtm/zen/CreateRelease.py
+++ b/Build/python/mtm/zen/CreateRelease.py
@@ -146,7 +146,6 @@ def _createCSharpPackage(self, includeSample, outputPath):
 
             self._createUnityPackage('[PackageTempDir]', outputPath)
         finally:
-            time.sleep(0.5)
             self._sys.deleteDirectory('[PackageTempDir]')
 
     def _createUnityPackage(self, projectPath, outputPath):