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Crashplan (Formerly Code42) for OS X and Windows 10

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: https://www.crashplan.com/

Code42 CrashPlan is the recommended cloud backup solution for desktops and laptops at MIT. All data stored on CrashPlan is encrypted.

  1. Navigate to: http://ist.mit.edu/crashplan/.
  2. Click on Code42.
  3. Click on the download link for your specific criteria (MIT Certificates are required)

Skip to

OS X:

  1.  Once logged in, the file will start to download. After it has completed, click on the .dmg file.


  2.  If you have an old version of CrashPlan already installed, it must be removed before the new version is installed. If this is a new install, skip to step 4.
  3.  Double click the Trash Can icon inside the installer window. 
    ## Click Open.
    ## Click Uninstall.
    ## A popup will confirm CrashPlan has been removed.

  4. Double click on the install icon.
    ## Click Continue.
    ## Click Install. Your Apple computer may ask you to enter your password.
    ## Once installed, a confirmation will popup. Click Close.


  5.  A new window will open. Enter your MIT email address and your Kerberos password (if required). You may also be asked to authenticate with MIT Touchstone. Click Continue.


    1. The first time you sign in to Code42 on a device it detects whether there are other devices on your account. If there are other devices on your account, it will prompt you.


      Add New Device: Starts a new backup for this device. Use this option if you plan to use both devices. CrashPlan will automatically start indexing and backing up your Apple Computer

      Replace Existing: Starts the replace device wizard, which includes choosing a device, transferring files, and updating settings. Use this option if you are upgrading from a previous version of CrashPlan/Code42.
    2. Choose the device you want to replace and click continue. It is recommended to restore all your files onto your device; however, you can select individual files and folders if you wish.


  6.  Code42 will automatically start indexing and backing up your computer. If you selected “Replace Existing”, Code42 will start downloading files to your computer and then start backing up new files.
*Note Code42, by default, only backs up data inside your USERS folder. This means files placed outside this folder will only be backed up if manually selected. Applications will not be backed up.

Mojave Users: Please follow these additional steps as Mojave security preferences require additional permissions.

Windows 10

  1.  If you have an old version of CrashPlan already installed, it must be removed before the new version is installed. If this is a new install, skip to step 3.
    # In the search bar type “Control Panel” and click on the icon.


    1. Click on “Uninstall a Program” under Programs.


    2. Click on “Code42 Crashplan” and then Uninstall.


    3. Click Yes.


    4. CrashPlan will be uninstalled.
  2. Once logged in, the file will start to download. After it has completed, click on the .exe file.


    1. Code42 will extract the files and then open. This may take a few minutes. If this is your first time using Code42, Sign up for an account, and enter your MIT email address and Kerberos Password (if required) in the boxes. You may also be asked to authenticate with MIT Touchstone.  Click Sign Up. If you have already registered, skip to step 4.


    2. Enter the information and click sign up.

  3.  Enter your MIT email address and your Kerberos password (if required). You may also be asked to authenticate with [MIT Touchstone|Touchstone Landing Page]. Click Continue.


    1. The first time you sign in to Code42 on a device it detects whether there are other devices on your account. If there are other devices on your account, it will prompt you. If not, skip to step 5.

      Add New Device: Starts a new backup for this device. Use this option if you plan to use both devices. Code42 will automatically start indexing and backing up your computer.
      Replace Existing: Starts the replace device wizard, which includes choosing a device, transferring files, and updating settings. Use this option if you are upgrading from a previous version of Cra/Code42shPlan.
    2. Choose the device you want to replace and click continue. It is recommended to restore all your files onto your device; however, you can select individual files and folders if you wish.


  4. Code42 will automatically start indexing and backing up your computer. If you selected “Replace Existing”, Code42 will start downloading files to your computer and then start backing up new files.
*Note Code42 only backs up data inside your USERS folder. This means files placed outside this folder will only be backed up if manually selected. Programs will not be backed up.

IS&T Contributions

Documentation and information provided by IS&T staff members


Last Modified:

January 23, 2023

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