Encountering the error “errordomain=nscocoaerrordomain&errormessage=không thể tìm thấy phím tắt được chỉ định.&errorcode=4” can be frustrating.
This issue arises when an application cannot locate a particular shortcut or resource it requires. Let’s dig into its possible causes and solutions to address it effectively.

Understanding the Problem
The error belongs to the NSCocoaErrorDomain, which encompasses various issues related to Apple’s Cocoa framework.
The error message highlights explicitly that a required shortcut is missing, and the code “4” identifies this unique problem.
Solutions to Fix “errordomain=nscocoaerrordomain&errormessage=không thể tìm thấy phím tắt được chỉ định.&errorcode=4”

1. Restore Your System to a Previous State
Performing a system restore can resolve the issue by rolling back your device to a point before the error occurred. Follow these steps:
- Open the Start menu and type “System Restore.”
- Select “Create a restore point” from the search results.
- Click the “System Restore” button.
- Follow on-screen prompts to choose a restore point and complete the process.
This process will revert your system configurations without affecting your files.
2. Reinstall the Faulty Application
Reinstalling the problematic application can fix corrupted or missing program files:
- Go to the Control Panel and open “Programs and Features.”
- Find the application in the list and uninstall it.
- Download the latest version of the software from the developer’s website.
- Reinstall the application following the setup instructions.
3. Recover Missing Files
If the error stems from deleted files, recovering them might solve the problem:
- Download a reliable recovery tool such as EaseUS Data Recovery Wizard or Recuva.
- Install and launch the tool.
- Follow the prompts to scan for and restore missing files.
Recommended File Recovery Tools | Description |
EaseUS Data Recovery Wizard | Offers advanced recovery options |
Recuva | Simple and user-friendly |
4. Repair Corrupted Registry Keys
Broken registry entries could also lead to this error. You can repair them as follows:
- Install a trusted registry cleaner, such as CCleaner or Wise Registry Cleaner.
- Open the software and perform a registry scan.
- Follow the tool’s instructions to resolve any issues found.
5. Keep Your System and Applications Updated
Outdated software is a common cause of errors. Ensure your system and applications are up-to-date:
- Go to the Start menu and search for “Windows Update.”
- Select “Check for updates” and follow the instructions to install updates.
- Update applications by checking for new versions on their respective websites or within the applications themselves.
6. Scan Your Device for Malware
Viruses or malware can also trigger this error. Here’s how to protect your system:
- Download a reputable antivirus program like Norton, Bitdefender, or Avast.
- Run a full system scan to detect and remove threats.
- Regularly update the antivirus software to keep it effective.
Antivirus Software | Key Features |
Norton | Comprehensive protection |
Bitdefender | High-performance scanning |
Avast | Free version available |
Preventive Measures
To avoid encountering the “errordomain=nscocoaerrordomain&errormessage=không thể tìm thấy phím tắt được chỉ định.&errorcode=4” error in the future:
- Regularly update your operating system and applications.
- Use reliable antivirus software to protect your system from malware.
- Avoid deleting system-critical files and shortcuts.
- Back up your important data frequently.
Common Triggers for the errordomain=nscocoaerrordomain&errormessage=không thể tìm thấy phím tắt được chỉ định.&errorcode=4 Error

Here are scenarios where this error might appear:
- Attempting to open a specific application.
- Trying to access a feature within a program.
- Running a script or batch operation.
- Working with files or system resources.
Related Errors
Errors similar to “errordomain=nscocoaerrordomain&errormessage=không thể tìm thấy phím tắt được chỉ định.&errorcode=4” include:
- “Errordomain=NSCocoaErrorDomain&ErrorMessage=Shortcut not located.”
- “Errordomain=NSCocoaErrorDomain&ErrorMessage=Specified shortcut not accessible.”
- “Errordomain=NSCocoaErrorDomain&ErrorMessage=Missing shortcut resource.”
Can You Resolve This Issue on Your Own?

You can resolve the error “errordomain=nscocoaerrordomain&errormessage=không thể tìm thấy phím tắt được chỉ định.&errorcode=4” by following the solutions outlined above.
If the problem persists despite these efforts, consider seeking help from professional tech support or contacting the app’s developer.
By addressing potential causes and implementing the provided fixes, you can restore functionality to your applications and avoid future errors.