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Code42 Support

Assign your computer a new ID

Applies to:
  • CrashPlan for Small Business
  • Code42 CrashPlan (previously CrashPlan PROe)


Every backup archive created with the CrashPlan app is tied to a specific computer through a unique computer ID. This way, the Code42 server can keep a thorough and unique record of each computer's backup history (previous file versions, moved and deleted files). In certain situations, you may need to assign your computer a new ID. This article describes the process of assigning your computer a new ID.


  • You might need to assign your computer a new ID if:
    • You have cloned a Virtual Machine
    • You recently changed computers with the help of a utility like Migration Assistant or Time Machine
    • Our Customer Champions ask you to do this when troubleshooting an issue
  • The CrashPlan app's uninstaller does not reset your computer identity. If you want to completely remove traces of your previous installation, you must reset the identity using the instructions below.


  1. Sign in to the CrashPlan app.
  2. Open Code42 CrashPlan Commands by entering the keyboard shortcut for your operating system:
    • Windows: Ctrl+shift+C
    • OS X: Option+Command+C
    • Linux: Ctrl+Shift+C
  3. Enter: guid new
  4. Press Enter.

That's it! Now it is as if you installed the CrashPlan app for the first time on that computer.