--- a/taskcluster/ci/desktop-test/test-sets.yml
+++ b/taskcluster/ci/desktop-test/test-sets.yml
@@ -57,17 +57,17 @@ asan-tests:
     - mochitest-webgl
     - reftest
     - reftest-no-accel
     - xpcshell
 
 windows-vm-tests:
     - cppunit
     #- crashtest
-    #- external-media-tests
+    - external-media-tests
     #- gtest
     #- jittest
     #- jsreftest
     #- marionette
     #- mochitest
     #- mochitest-browser-chrome
     #- mochitest-devtools-chrome
     #- mochitest-jetpack

--- a/taskcluster/ci/desktop-test/tests.yml
+++ b/taskcluster/ci/desktop-test/tests.yml
@@ -50,24 +50,23 @@ crashtest:
 external-media-tests:
     description: "External Media Test run"
     suite: external-media-tests
     treeherder-symbol: tc-VP(b-m)
     e10s: false
     tier: 2
     max-run-time: 5400
     mozharness:
-        script: firefox_media_tests_buildbot.py
-        no-read-buildbot-config: true
+        script: firefox_media_tests_taskcluster.py
         config:
             by-test-platform:
                 win.*:
                     - mediatests/taskcluster_windows_config.py
                 default:
-                    - mediatests/buildbot_posix_config.py
+                    - mediatests/taskcluster_posix_config.py
                     - remove_executables.py
 
 firefox-ui-functional-local:
     description: "Firefox-ui-tests functional run"
     suite: "firefox-ui/functional local"
     treeherder-symbol: tc-Fxfn-l(en-US)
     max-run-time: 5400
     tier: 1