Capacities "Updating Failed" or "Synchronization Failed" Error
Workaround available Windows, Mac, Linux, iOS, Android, Web Updated October 21, 2026
Quick answer
'Updating failed' means content on this device may be out of sync with the server; fix it with Settings > Account > Reboot. 'Synchronization failed' is a rarer server or account problem: restart Capacities and contact support if it persists.
Most likely fix: Reboot the app for 'Updating failed'.
Symptoms
A status message saying 'Updating failed' or 'Synchronization failed', or 'Server is offline' / 'Sync Server is offline'.
Why it happens
- Local copy out of sync with the server
- Temporary server or sync-server outage
- Account-level problem on the server
How to fix it
Try these in order — the most common fix is first.
1. Reboot the app for 'Updating failed'
- Go to Settings > Account > Reboot
- Wait for the full resync before editing
2. Restart for 'Synchronization failed'
- Quit and reopen Capacities
- If the error returns, contact support from the docs
3. Wait out server outages
- If it says 'Server is offline' or 'Sync Server is offline', check status.capacities.io
- Sync-server outages usually last a few minutes
- Don't log out or reset the app during an outage
This guide also covers
- capacities updating failed
- capacities synchronization failed
- capacities server is offline
- capacities sync server offline
Still not working?
If Capacities keeps failing, you're not alone. See every Capacities problem users report or the alternatives people switch to.
Other Capacities errors
- Capacities Not Syncing (Offline Icon Showing)
- Capacities Notes Missing or Disappeared
- Capacities "View Is Not Ready Yet" Message
- Capacities Calendar Integration Not Working
- Capacities Apple Calendar (iCloud) Not Showing Events
- Capacities Export Missing Images or Files
- Capacities Automated Backup Not Running
- Capacities Notion Import Not Working Properly
- Capacities iPhone App Stuck on Launch Screen or Freezing
- Capacities Version Conflict Pop-Up
- How to Cancel Capacities Subscription