You Don't Have Permission to Open the Application on Mac: How to Fix I

Encountering the "You don’t have permission to open the application on Mac" error? This common macOS issue, prevalent even on Big Sur, can be frustrating, but easily resolved. This guide provides solutions for MacBook Pro and MacBook Air users.

The error can stem from app problems (bugs, incorrect settings), restricted access, corrupted files, or network issues.

Troubleshooting Steps:

First, adjust permissions directly:

1. Select the app, then choose File > Get Info.
2. Expand Sharing & Permissions.
3. Adjust Privilege to Read & Write or Read only.

Beyond this, several fixes exist:

1. Update macOS: Ensure your operating system is current. Go to Apple menu > About This Mac > Software Update.

   

2. Terminal Commands: Use Terminal commands to modify permissions. Open Terminal (Spotlight: Command Space), then enter: sudo chmod -R 755 [app's full file path]. Alternatively, drag and drop the app into Terminal after typing sudo chmod -R 755.

   

3. Remove Quarantine Flag: For third-party apps, remove the quarantine flag: In Terminal, use sudo xattr -dr com.apple.quarantine [app's full file path], or drag and drop the app after typing sudo xattr -dr com.apple.quarantine.

   

4. Disable Gatekeeper (Temporarily): In Terminal, run sudo spctl –master-disable, then spctl –status to verify. Remember to re-enable Gatekeeper afterward.

   

5. Grant Read/Write Permission: In Terminal, use sudo chmod -R 755 [app's full file path] (or drag and drop as described above).

   

6. Unpack with UPX (if applicable): If the app uses UPX compression, install Homebrew (/bin/bash -c "$(curl -fsSLhttps://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"), then UPX (brew install upx). Unpack using sudo upx -d [app file path].

   

7. Disable System Integrity Protection (SIP) (Temporarily): Check SIP status (Apple menu > About This Mac > System Report > Software > System Integrity Protection). Disable in Recovery Mode (Command R at startup) using csrutil disable in Terminal. Re-enable after troubleshooting.

   

8. Reinstall the App: Uninstall and reinstall the application.

   

9. Use Rosetta (for Apple Silicon Macs): If the app is Intel-based, right-click, select Get Info > General > Open using Rosetta. Install Rosetta if needed via Terminal: /usr/sbin/softwareupdate --install-rosetta --agree-to-license.

   

For thorough app removal and reinstallation, consider using a dedicated uninstaller like MacKeeper's Smart Uninstaller. This helps clear leftover files and ensures a clean reinstallation.

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