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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.

Code42 app requirements

  • These system requirements are the minimum requirements to install the Code42 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 Code42 app to use more RAM than the minimum requirement.
  • The Code42 app requires an Internet connection for almost all activity, including signing in, backing up, restoring, and changing most settings.

Code42 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 
  • Install libgconf-2-4

The Code42 app requires a graphical user interface (GUI) for use on all operating systems. The app's desktop UI requires, at most, a screen area 960 pixels wide by 780 pixels high. Some systems may be able to display it as small as 900 pixels by 680 pixels.

CrashPlan mobile app

Mobile OS Version
Android Android 2.2 and later
iOS iOS 7.0 and later

Network ports

The Code42 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 Code42 app to connect to the Code42 service
443 TCP Code42 cloud (Required) Used by the Code42 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 Code42 app.