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CrashPlan Cloud
CrashPlan for Small Business
CrashPlan On-Premises

Find your product plan in the Code42 console on the Account menu.
Not a CrashPlan On-Premises customer? Search or browse Incydr and Instructor, CrashPlan Cloud, or CrashPlan for Small Business.

Instructor, no.

Incydr Professional, Enterprise, Gov F2, and Horizon, no.

Incydr Basic, Advanced, and Gov F1, no.

CrashPlan Cloud, no.

Retired product plans, yes.

CrashPlan for Small Business, no.

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Code42 Support

Linux CrashPlan app unable to download JRE

Who is this article for?

CrashPlan Cloud
CrashPlan for Small Business
CrashPlan On-Premises

Find your product plan in the Code42 console on the Account menu.
Not a CrashPlan On-Premises customer? Search or browse Incydr and Instructor, CrashPlan Cloud, or CrashPlan for Small Business.

Instructor, no.

Incydr Professional, Enterprise, Gov F2, and Horizon, no.

Incydr Basic, Advanced, and Gov F1, no.

CrashPlan Cloud, no.

Retired product plans, yes.

CrashPlan for Small Business, no.

Overview

If installing the Code42 app on Linux fails and displays the message Unable to download JRE; please check network connection, the cause may be an old version of wget. The installer uses wget to download a compatible version of the JRE from Code42. Wget versions 1.14 and earlier do not support Server Name Indication (SNI), which is required to connect to Code42's download server.

Affects

Code42 app on Linux devices using wget version 1.14 or earlier. To see what version of wget your system has, enter the command: wget -V

Recommended solution

To resolve this issue, follow the steps below:

  1. Update your version of wget to at least version 1.15 using your package manager. Depending on your Linux distribution, you might use one of these commands:
    • sudo apt-get install wget (Ubuntu)
    • sudo yum upgrade wget (Red Hat)
  2. Uninstall and reinstall your Code42 app.

Alternative solution

To resolve the issue without updating wget, follow the steps below to manually retrieve the required JRE:

  1. Uninstall the Code42 app.
  2. Download the JRE that matches your Code42 app version.
  3. Move the JRE tarball into the CrashPlan installation folder.
    • By default: ~/Downloads/crashplan-install/
  4. Use the installer downloaded in step 1 to reinstall the Code42 app.
    The Code42 app installer locates the JRE and installs successfully.
Update wget
The core problem is with older versions of wget, so if you follow the alternative solution without updating wget, you'll need to do this again the next time there's a Code42 app update.