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crashplan icon

CrashPlan is a cloud-based program which gives you unlimited backup space and protection against malware. If for some reason you need to uninstall CrashPlan, follow this article to learn how to do this correctly.


  1. Uninstall CrashPlan manually.
  2. Remove CrashPlan with the uninstalling software.

Uninstall CrashPlan Manually

Follow these steps to completely remove CrashPlan from your Mac:

  1. First, unblock CrashPlan.
  2.  Then quit the CrashPlan application using the drop-down menu in the toolbar. crashplan menu with quit app option
  3. Delete CrashPlan from the Applications folder.
  4. Now you need to do the most important step for the complete removal of the app. Find and delete the system files of the app from the Library folder:

    • ~Library > Saved Application State > com.backup42.desktop.savedState
    • ~Library > Caches > com.backup42.desktop
    • ~Library > Saved Application State > com.backup42.desktop
    • ~Library > Preferences > com.backup42.desktop.plist
    • ~Library > Logs > Crashplan

Don’t forget to mount the application from its disk image. If you click on it, you’ll find the Uninstall file.

crashplan uninstall file in Finder

Remove CrashPlan with App Cleaner & Uninstaller

To delete CrashPlan in a few clicks you can use a special tool App Cleaner & Uninstaller. This utility scans the whole HD and searches for applications and all its service files. As well you can find leftovers (remaining files) of previously deleted apps.
uninstalling CrashPlan with App Cleaner

Please note, with the latest update of CrashPlan, its developers have made it unable by default to uninstall the application. You can check it by calling “Get info” command – you will see that it is locked.

CrashPlan app info showing how to unlock for removal

To unlock CrashPlan use the Terminal app and the following commands:

1) sudo chflags nouchg /Applications/

terminal window with command to unlock crashplan

Type your password and click Enter. Then enter this command:

2) sudo chflags noschg /Applications/

After this, you can easily uninstall CrashPlan from your Mac.

Please note, the command above works if you have administrator rights. In case you have logged in to Mac via your User account, you should re-login as Admin.

You can re-login or do it right in the Terminal using the following command:

login admin [name][/name]

Terminal window showing relogin Mac command

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