Mac Os Needs To Repair Your Library To Run

24-05-2021
 |  [RAND-100] - Comments

Jan 10, 2020  Though this sounds a substantial move, the majority are hit by ‘macOS needs to repair your library to run applications’ message just after the update. The message pops up each time you open an application in your mac. To help you enjoy the Mojave or High Sierra new features, try to fix the macOS library using the following options.

  1. Error Message Macos Needs To Repair Your Library To Run Applications
  2. Mac Os Needs To Repair Your Library To Run
  3. Mac Os Needs To Repair Your Library To Run Applications After Migration

Your home folder contains many files and folders that apps on your Mac have permission to read or modify. If you use Get Info or other methods to change those permissions, you could experience issues such as these:

  • Changes that you make in System Preferences aren't saved after you quit System Preferences.
  • Changes that you make to the Dock aren't saved after you log out of your user account.
  • Windows that were open the last time you logged out or quit an app (before you changed permissions) open again after you log in or open the app.
  • You're asked for an administrator name and password when moving certain items in the home folder.
  • You repeatedly get a message that macOS needs to repair your Library to run applications.
  • When saving changes to an item, you get a message that the file is locked or you don't have permission to save.
  • Preview, TextEdit, or other sandboxed apps unexpectedly quit when opened.
  • You get an alert that the startup disk has no more space available for application memory.
  • Activity Monitor shows that Safari or SafariDAVClient is using a large amount of system resources.
  • Your Mac performs slowly.
  • iTunes says that your device cannot be synced.
  • Photos and videos that you import into Photos or iPhoto don't appear within the app, but do appear in Finder. Or your library needs to be updated or reselected each time you open Photos or iPhoto.

Reset permissions

Repair

If the issue started after changing the permissions of items in your home folder , use these steps to reset permissions.

Error Message Macos Needs To Repair Your Library To Run Applications

  1. Turn on or restart your Mac, then immediately press and hold Command (⌘)-R to start up from macOS Recovery.
  2. You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.
  3. When you see the macOS Utilities window, choose Utilities > Terminal from the menu bar.
  4. Type repairHomePermissions in the Terminal window, then press Return. The Repair Home app opens.
  5. Select your user account, click Next, then enter your administrator password. Click Next unlock the volume and begin resetting permissions on your home directory.
  6. When done, click Exit to return to the macOS Utilities window.
  7. Select Reinstall macOS, then click Continue and follow the onscreen instructions to reinstall macOS.

If the issue persists

Mac Os Needs To Repair Your Library To Run

If resetting permissions doesn't resolve the issue:

Mac Os Needs To Repair Your Library To Run Applications After Migration

  1. Make sure that you have a backup of your Mac, then erase your startup disk.
  2. When done, reinstall macOS.
  3. After installation completes and your Mac restarts to the setup assistant, create a new user account using a different name than the one you were using before. Any difference in spelling is enough.
  4. If you made a Time Machine backup, use Migration Assistant to restore all your files from the backup.