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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 version)
    • Firefox (more recent version)
    • Internet Explorer 11
      Internet Explorer 10 is supported only for Code42 servers version 5.1.x and earlier
    • Microsoft Edge (most recent version)
    • Safari (most recent version per supported version of OS X)
      Safari 6.1 is supported only for Code42 servers version 5.1.x and earlier

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
  • macOS and OS X operating systems:
    • macOS 10.12
    • OS X 10.11
    • OS X 10.10
    • OS X 10.9
  • 1 GHz x86-64 CPU
  • 1 GB Memory
  • 450 MB free drive space
  • Kernel version: 2.6.32 and later
  • glibc version: 2.9 and later
  • cpio
  • Xorg
  • GTK2
  • SysVinit
  • SWT1

The CrashPlan app requires a graphical user interface (GUI) for use on all operating systems.
1 This component is packaged with the CrashPlan app.

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.