diff --git a/taskcluster/ci/test/tests.yml b/taskcluster/ci/test/tests.yml
index 35ce69813b51..7d83ae2477c3 100644
--- a/taskcluster/ci/test/tests.yml
+++ b/taskcluster/ci/test/tests.yml
@@ -184,6 +184,7 @@ gtest:
     run-on-projects:
         by-test-platform:
             linux64-qr/.*: ['mozilla-central', 'try']
+            windows.*-pgo/.*: [] # permafails on pgo
             default: built-projects
     mozharness:
         script: desktop_unittest.py