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 means the destination is connected
- Gray means your computer can't connect to the destination
This issue can occur for a number of reasons. Follow the instructions below in the order they are presented.
Re-authenticate with the destination
- Open the CrashPlan app
- Double-click the CrashPlan logo in the upper-right corner
The CrashPlan command-line area opens
- Enter this command:
- Press Enter
This closes the CrashPlan app, stops the CrashPlan service, and then restarts the CrashPlan service
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.
If you are unable to connect to a computer destination, refer to our guide on Connections Between Computers.
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.