--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -4585,17 +4585,21 @@ pref("layers.prefer-opengl", false);
 pref("layers.prefer-d3d9", false);
 pref("layers.allow-d3d9-fallback", true);
 pref("layers.d3d11.force-warp", false);
 pref("layers.d3d11.disable-warp", true);
 
 #endif
 
 // Copy-on-write canvas
+#ifdef XP_WIN
+pref("layers.shared-buffer-provider.enabled", false);
+#else
 pref("layers.shared-buffer-provider.enabled", true);
+#endif
 
 // Force all possible layers to be always active layers
 pref("layers.force-active", false);
 
 // Never use gralloc surfaces, even when they're available on this
 // platform and are the optimal surface type.
 pref("layers.gralloc.disable", false);