Skip to main content
Code42 Support

Unable to back up - no connection for X days

Applies to:
  • CrashPlan for Small Business (Mac only)
  • CrashPlan PROe


When your computer is unable to connect to a backup destination, the CrashPlan app displays the message “Unable to back up - no connection for X days” for that destination. Additionally, you might receive an email alert notifying you that the computer “has been unable to reach any backup destinations for X Days”.

Follow the instructions in this article to troubleshoot the issue.


If you have multiple destinations, you can identify the destination with connection problems from the Backup tab of the CrashPlan app. Check the circle next to the destination's name:

  • Green File:CrashPlan/Latest/Troubleshooting/Unable_To_Back_Up_-_No_Connection_For_X_Days/Screen_Shot_2014-05-14_at_4.40.16_PM.png means the destination is connected
  • Gray File:CrashPlan/Latest/Troubleshooting/Unable_To_Back_Up_-_No_Connection_For_X_Days/Screen_Shot_2014-05-15_at_8.06.16_AM.png means your computer can't connect to the destination

Recommended solution

This issue can occur for a number of reasons. Follow the instructions below in the order they are presented.

Re-authenticate with the destination

  1. Open the CrashPlan app
  2. Double-click the CrashPlan logo in the upper-right corner
    The CrashPlan command-line area opens
  3. Enter this command:
  4. Press Enter
    This closes the CrashPlan app, stops the CrashPlan service, and then restarts the CrashPlan service

Running the restart command

Uninstall and reinstall the CrashPlan app

If re-authenticating with the destination did not resolve the issue, perform a standard uninstall and reinstall of the CrashPlan app. A standard uninstall does not affect your existing backups.

Troubleshoot network connection

If the previous recommendations did not resolve your issue, follow the instructions below for the type of destination affected.

Cloud (online) destination

If you are unable to connect to a cloud destination (e.g., CrashPlan Central), please see our network troubleshooting article to identify and resolve the issue.

Computer destination

If you are unable to connect to a computer destination, refer to our guide on Connections Between Computers.

Only backing up an external drive?
In rare scenarios, this issue can occur when the only files selected for backup are on an external drive that isn't currently connected to the computer. Connect the external drive to resolve the issue.

Further assistance

If the issue still isn't resolved, gather your logs and contact our Customer Champions for Code42 for Enterprise support or CrashPlan for Small Business (previously CrashPlan PRO) support.