diff --git a/modules/libpref/init/StaticPrefList.h b/modules/libpref/init/StaticPrefList.h
index 8928a21b3420..37af1f98e824 100644
--- a/modules/libpref/init/StaticPrefList.h
+++ b/modules/libpref/init/StaticPrefList.h
@@ -6299,7 +6299,7 @@ VARCACHE_PREF(
   Live,
   "media.devices.insecure.enabled",
   media_devices_insecure_enabled,
-  bool, true
+  bool, false
 )
 
 // If the above pref is also enabled, this pref enabled getUserMedia() support
diff --git a/testing/web-platform/meta/mediacapture-record/__dir__.ini b/testing/web-platform/meta/mediacapture-record/__dir__.ini
index fcfb216d298b..59942cb3eae8 100644
--- a/testing/web-platform/meta/mediacapture-record/__dir__.ini
+++ b/testing/web-platform/meta/mediacapture-record/__dir__.ini
@@ -1 +1 @@
-prefs: [media.navigator.permission.disabled:true, media.navigator.streams.fake:true, media.devices.insecure.enabled:false, dom.security.featurePolicy.enabled:true, dom.security.featurePolicy.header.enabled:true, dom.security.featurePolicy.webidl.enabled:true]
+prefs: [media.navigator.permission.disabled:true, media.navigator.streams.fake:true, dom.security.featurePolicy.enabled:true, dom.security.featurePolicy.header.enabled:true, dom.security.featurePolicy.webidl.enabled:true]
diff --git a/testing/web-platform/meta/mediacapture-streams/__dir__.ini b/testing/web-platform/meta/mediacapture-streams/__dir__.ini
index fcfb216d298b..59942cb3eae8 100644
--- a/testing/web-platform/meta/mediacapture-streams/__dir__.ini
+++ b/testing/web-platform/meta/mediacapture-streams/__dir__.ini
@@ -1 +1 @@
-prefs: [media.navigator.permission.disabled:true, media.navigator.streams.fake:true, media.devices.insecure.enabled:false, dom.security.featurePolicy.enabled:true, dom.security.featurePolicy.header.enabled:true, dom.security.featurePolicy.webidl.enabled:true]
+prefs: [media.navigator.permission.disabled:true, media.navigator.streams.fake:true, dom.security.featurePolicy.enabled:true, dom.security.featurePolicy.header.enabled:true, dom.security.featurePolicy.webidl.enabled:true]