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Code42 Support

CrashPlan for Small Business requirements

Available in:

Small Business


This article lists the system requirements and network ports for your CrashPlan for Small Business environment.

Administration console requirements

  • Minimum resolution: 1024x768
  • Web browser:
    • Chrome (most recent)
    • Firefox (most recent)
    • Internet Explorer 11 (on Windows)
    • Microsoft Edge (most recent, on Windows)
    • Safari (most recent, on Mac, Linux)

The administration console does not support mobile web browsers.

CrashPlan app requirements

  • These system requirements are the minimum requirements to install the CrashPlan app. We recommend using more powerful hardware for the best performance.
  • If your backup is unusually large (more than 1 TB or 1 million files), you must configure the CrashPlan app to use more RAM than the minimum requirement.
  • The CrashPlan app requires an Internet connection for almost all activity, including signing in, backing up, restoring, and changing most settings.

CrashPlan app

OS Hardware Software
  • 1 GHz CPU
  • 1 GB Memory
  • 450 MB free drive space
  • Windows operating systems:
    • Windows 10
    • Windows 8, 8.1
    • Windows 7
    • Server 2016
    • Server 2012 R2
    • Server 2008 R2


  • 1 GHz 64-bit Intel CPU
  • 1 GB Memory
  • 450 MB free drive space
  • Mac operating systems:
    • macOS High Sierra 10.13
    • macOS Sierra 10.12
    • OS X El Capitan 10.11
    • OS X Yosemite 10.10
    • OS X Mavericks 10.9
  • 1 GHz CPU
  • 1 GB Memory
  • 450 MB free drive space
  • Linux operating systems: 
    • Red Hat Enterprise Linux 7.1, 7.2, 7.3
    • Ubuntu 14.04 (64-bit) or higher 

The CrashPlan app requires a graphical user interface (GUI) for use on all operating systems.

CrashPlan mobile app

Mobile OS Version
Android Android 2.2 and later
iOS iOS 7.0 and later
Windows Phone1
  • Windows Phone 8
  • Windows Phone 7.5

1 See end-of-support details.

Network ports

The CrashPlan app requires the following ports to communicate with your backup destinations. Depending on the destinations you use, you may not require all ports:

Port(s) Protocol Destination Description
4242* TCP CrashPlan devices (Default) Listening port between devices on the same account
4243* TCP localhost (Default) Used by the CrashPlan app to connect to the CrashPlan service
443 TCP Code42 cloud (Required) Used by the CrashPlan app to connect to the Code42 cloud

* Depending on your configuration, alternative ports may be used. To find the ports used on your device, identify the ports used by the CrashPlan app.