diff --git a/core/jni/com_android_internal_os_Zygote.cpp b/core/jni/com_android_internal_os_Zygote.cpp
index efede21816284..3156f71fa113b 100644
--- a/core/jni/com_android_internal_os_Zygote.cpp
+++ b/core/jni/com_android_internal_os_Zygote.cpp
@@ -843,7 +843,7 @@ static void MountEmulatedStorage(uid_t uid, jint mount_mode,
   PrepareDir(user_source, 0710, user_id ? AID_ROOT : AID_SHELL,
              multiuser_get_uid(user_id, AID_EVERYBODY), fail_fn);
 
-  bool isAppDataIsolationEnabled = GetBoolProperty(kVoldAppDataIsolation, true);
+  bool isAppDataIsolationEnabled = GetBoolProperty(kVoldAppDataIsolation, false);
 
   if (mount_mode == MOUNT_EXTERNAL_PASS_THROUGH) {
       const std::string pass_through_source = StringPrintf("/mnt/pass_through/%d", user_id);
diff --git a/services/core/java/com/android/server/StorageManagerService.java b/services/core/java/com/android/server/StorageManagerService.java
index b0f2e24e3be27..c951fd438b783 100644
--- a/services/core/java/com/android/server/StorageManagerService.java
+++ b/services/core/java/com/android/server/StorageManagerService.java
@@ -1716,7 +1716,7 @@ class StorageManagerService extends IStorageManager.Stub
     public StorageManagerService(Context context) {
         sSelf = this;
         mVoldAppDataIsolationEnabled = SystemProperties.getBoolean(
-                ANDROID_VOLD_APP_DATA_ISOLATION_ENABLED_PROPERTY, true);
+                ANDROID_VOLD_APP_DATA_ISOLATION_ENABLED_PROPERTY, false);
         mContext = context;
         mResolver = mContext.getContentResolver();
         mCallbacks = new Callbacks(FgThread.get().getLooper());
diff --git a/services/core/java/com/android/server/am/ProcessList.java b/services/core/java/com/android/server/am/ProcessList.java
index 53d75d1ddd06a..6f6cad043a420 100644
--- a/services/core/java/com/android/server/am/ProcessList.java
+++ b/services/core/java/com/android/server/am/ProcessList.java
@@ -711,7 +711,7 @@ public final class ProcessList {
         mAppDataIsolationEnabled =
                 SystemProperties.getBoolean(ANDROID_APP_DATA_ISOLATION_ENABLED_PROPERTY, true);
         mVoldAppDataIsolationEnabled = SystemProperties.getBoolean(
-                ANDROID_VOLD_APP_DATA_ISOLATION_ENABLED_PROPERTY, true);
+                ANDROID_VOLD_APP_DATA_ISOLATION_ENABLED_PROPERTY, false);
         mAppDataIsolationWhitelistedApps = new ArrayList<>(
                 SystemConfig.getInstance().getAppDataIsolationWhitelistedApps());