220-1102 Question 199
Single answer/LibraryA macOS user reports that a recently installed application works for one account on the Mac but fails to launch for every other user. As the technician, you verify the app is installed correctly in /Applications. You suspect a required support file was placed in the wrong Library location during installation. Which location should you check first to confirm whether the file was incorrectly installed only for the current user instead of system-wide?
- A
~/Library
- B
/Library
- C
/System/Library
- D
/Users/Shared
Show answer and explanation
Correct answer: A
Explanation
The key troubleshooting clue is that the application works for only one user account. On macOS, ~/Library is specific to the logged-in user, while /Library is available system-wide. If a required support file was mistakenly installed in ~/Library instead of /Library, other users would not have access to it, causing exactly this symptom. /System/Library is reserved for Apple-provided operating system components and is protected by macOS security mechanisms, making it an inappropriate location for third-party support files. /Users/Shared is intended for shared documents and data, not standard application support resources. This aligns with Apple filesystem conventions for user-level versus system-level Library contents and with common troubleshooting practices for macOS application support issues.
- A. Correct.
Correct. ~/Library is the current user's personal Library folder. If an installer or technician mistakenly places required application support files, preferences, or other resources here, only that specific user account will be able to use them. This matches the scenario where the app works for one user but not for others.
- B. Incorrect.
Incorrect. /Library is the system-wide Library folder used for resources available to all users on the Mac, such as Application Support files, fonts, preferences, and plugins intended to be shared. If the file were placed here correctly, the application would be more likely to work for multiple users.
- C. Incorrect.
Incorrect. /System/Library contains files used by macOS itself and is not the appropriate place for third-party application support files. On modern macOS versions, this area is protected and should generally not be modified during normal troubleshooting or application deployment.
- D. Incorrect.
Incorrect. /Users/Shared is a shared data folder for user-accessible files, but it is not the standard location for application support resources that macOS applications expect to find in Library folders. Choosing this option reflects confusion between shared user data storage and macOS support-file locations.