diff --git a/toolkit/modules/GMPUtils.sys.mjs b/toolkit/modules/GMPUtils.sys.mjs
index 6b7a9610fc5d..674560ac45be 100644
--- a/toolkit/modules/GMPUtils.sys.mjs
+++ b/toolkit/modules/GMPUtils.sys.mjs
@@ -122,6 +122,7 @@ export var GMPPrefs = {
   KEY_PLUGIN_VISIBLE: "media.{0}.visible",
   KEY_PLUGIN_ABI: "media.{0}.abi",
   KEY_PLUGIN_FORCE_SUPPORTED: "media.{0}.forceSupported",
+  KEY_PLUGIN_ALLOW_X64_ON_ARM64: "media.{0}.allow-x64-plugin-on-arm64",
   KEY_URL: "media.gmp-manager.url",
   KEY_URL_OVERRIDE: "media.gmp-manager.url.override",
   KEY_CERT_CHECKATTRS: "media.gmp-manager.cert.checkAttributes",
diff --git a/toolkit/mozapps/extensions/internal/GMPProvider.sys.mjs b/toolkit/mozapps/extensions/internal/GMPProvider.sys.mjs
index 78a1ecec7905..830366760427 100644
--- a/toolkit/mozapps/extensions/internal/GMPProvider.sys.mjs
+++ b/toolkit/mozapps/extensions/internal/GMPProvider.sys.mjs
@@ -770,7 +770,14 @@ var GMPProvider = {
     try {
       let greDir = Services.dirsvc.get(NS_GRE_DIR, Ci.nsIFile);
       let path = greDir.path;
-      if (GMPUtils._isWindowsOnARM64()) {
+      if (
+        GMPUtils._isWindowsOnARM64() &&
+        GMPPrefs.getBool(
+          GMPPrefs.KEY_PLUGIN_ALLOW_X64_ON_ARM64,
+          true,
+          CLEARKEY_PLUGIN_ID
+        )
+      ) {
         path = PathUtils.join(path, "i686");
       }
       let clearkeyPath = PathUtils.join(