diff --git a/tools/internal_ci/windows/bazel_rbe.bat b/tools/internal_ci/windows/bazel_rbe.bat
index 65397a77682..b26b09e73c6 100644
--- a/tools/internal_ci/windows/bazel_rbe.bat
+++ b/tools/internal_ci/windows/bazel_rbe.bat
@@ -24,7 +24,7 @@ powershell -Command "[guid]::NewGuid().ToString()" >%KOKORO_ARTIFACTS_DIR%/bazel
 set /p BAZEL_INVOCATION_ID=<%KOKORO_ARTIFACTS_DIR%/bazel_invocation_ids
 
 @rem TODO(jtattermusch): windows RBE should be able to use the same credentials as Linux RBE.
-bazel --bazelrc=tools/remote_build/windows.bazelrc test --invocation_id="%BAZEL_INVOCATION_ID%" %BAZEL_FLAGS% --workspace_status_command=tools/remote_build/workspace_status_kokoro.bat //test/...
+bazel --bazelrc=tools/remote_build/windows.bazelrc --output_user_root=T:\_bazel_output test --invocation_id="%BAZEL_INVOCATION_ID%" %BAZEL_FLAGS% --workspace_status_command=tools/remote_build/workspace_status_kokoro.bat //test/...
 set BAZEL_EXITCODE=%errorlevel%
 
 if not "%UPLOAD_TEST_RESULTS%"=="" (