macOS Catalina often blocks the BlueStacks kernel extension by default. You must manually allow it for the engine to start: Open Security Settings System Preferences Security & Privacy Allow Developer
Catalina's security layers can make BlueStacks feel sluggish. Increasing the allocated RAM and CPU cores in BlueStacks Settings > Engine 5. The Modern Alternative: BlueStacks X bluestacks mac catalina
Some users found that disabling Gatekeeper via the Terminal ( sudo spctl --master-disable ) was necessary to get the installer to cooperate during the early Catalina days. Which Version Should You Use? macOS Catalina often blocks the BlueStacks kernel extension
The short answer is complex. While BlueStacks once worked seamlessly on Mojave and High Sierra, However, that does not mean you are out of options. The Modern Alternative: BlueStacks X Some users found
These work well on Catalina:
: Choose a phone model (e.g., Pixel 3) with Android 10+ (64-bit).