• Unable to restore
• Unable to remove backup set
• Unable to open Zip file from web restore
• Unable to back up files on Windows
• Unable to back up files on Mac
• Unable to back up files on Linux
• Troubleshoot backups of Microsoft Outlook data with CrashPlan
• Test your network connection to CrashPlan servers
• Restarting the CrashPlan app service
• Renamed or 'missing' external drive stops backing up
• Red circle on files restored to a Mac device
• Real-time changes not detected in CrashPlan
• Read CrashPlan app log files
• Linux real-time file watching errors in CrashPlan
• Known software conflicts with the CrashPlan app
• Installing the CrashPlan app prompts for access to contacts, calendar, and tasks
• Lost or forgotten archive key password or custom encryption key
• File selection shows 0MB selected
• Mac external drive stops backing up, name appended with '1'
• Contacting backup server message prevents web restore
• Connection shows network blocked
• CrashPlan app installer does not open or respond on Windows
• Clear the app cache
• Cannot connect to destination
• Error opening CrashPlan app: 'The CrashPlan service has encountered a problem'
• Cannot access CrashPlan app logs on Mac
• Backups stall due to too many open files
• CrashPlan app crashes, restarts unexpectedly, or displays out-of-memory errors
• Web restore troubleshooting tips
• Unable to sign in due to HTTP errors 400 or 431