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CrashPlan (formerly Code42) is asking me for a server address and registration key

CrashPlan and Code42 are the same application/service. Crashplan was renamed Code42 after it was sold, then renamed again back to CrashPlan after it was sold again. Which name you see in the product, filenames, or paths depends on what version you are using. For the purposes of this documentation, the names are used interchangeably and refer to the same product.

The new vendor website for Crashplan is:

MIT distributes a customized installer for Code42 which normally handles the details of connecting to MIT's server. However, there can be situations where the MIT customizations do not work:

  • This can happen if you are installing onto a computer that already had a prior installation of Code42
  • This can happen if you run the installer straight from the zip file without extracting the files
  • This can happen if you use a generic un-customized installer.

Try our custom installers

Try to solve this using our customized installers from the IS&T Download page:

Server address and registration key

If you still need to enter a server address and registration key:

  • Radio button: New Account
  • User Name:
  • Password: standard Kerberos/email password
  • Registration key: available here (requires MIT certificate)
  • CrashPlan Server address:
  • If asked for a server address enter

IS&T Contributions

Documentation and information provided by IS&T staff members

Last Modified:

January 23, 2023

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  1. May 31, 2023

    Registration Key link appears to be broken.
    Takes you to a page that says "certificate error
    A client certificate was invalid or not provided." Event though I have a valid MIT certificate.

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