--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -5899,10 +5899,14 @@ pref("dom.xhr.lowercase_header.enabled",
 pref("toolkit.crashreporter.include_context_heap", false);
 #else
 pref("toolkit.crashreporter.include_context_heap", true);
 #endif
 
 // Open noopener links in a new process
 pref("dom.noopener.newprocess.enabled", true);
 
+#ifdef XP_WIN
+pref("layers.omtp.enabled", true);
+#else
 pref("layers.omtp.enabled", false);
+#endif
 pref("layers.omtp.force-sync", false);