diff --git a/BuildToolsVersion.txt b/BuildToolsVersion.txt
index ad24cfcfaf0b..a32a499917f5 100644
--- a/BuildToolsVersion.txt
+++ b/BuildToolsVersion.txt
@@ -1 +1 @@
-1.0.26-prerelease-00829-01
\ No newline at end of file
+1.0.26-prerelease-00901-01
diff --git a/dir.traversal.targets b/dir.traversal.targets
index 1807beea21ff..a8da4a349410 100644
--- a/dir.traversal.targets
+++ b/dir.traversal.targets
@@ -178,13 +178,13 @@
     <!-- To Serialize we use msbuild's batching functionality '%' to force it to batch all similar projects with the same identity
          however since the project names are unique it will essentially force each to run in its own batch -->
 
-    <MSBuild Targets="PrepareForRun;Test"
+    <MSBuild Targets="Test"
              Projects="@(ProjectsToTest)"
              Condition="'$(SerializeProjects)'=='true' AND '%(Identity)' != ''"
              Properties="DefaultBuildAllTarget=$(DefaultBuildAllTarget);BuildAllProjects=true"
              ContinueOnError="ErrorAndContinue" />
 
-    <MSBuild Targets="PrepareForRun;Test"
+    <MSBuild Targets="Test"
              Projects="@(ProjectsToTest)"
              Condition="'$(SerializeProjects)'!='true'"
              Properties="DefaultBuildAllTarget=$(DefaultBuildAllTarget);BuildAllProjects=true"