// troubleshooting guide · sync.com
Sync.com 'Cannot Connect to Network' Error
- Status
- Workaround available
- platforms:
- Windows, macOS
- updated:
- November 15, 2026
- reports:
- 2
- Method
- how we research
RUNBOOK · sync-com/cannot-connect-to-network4 FIXES
// quick answer
The 'cannot connect to network' error in the Sync desktop app is most often caused by the network itself, an SSL certificate issue, or an old app version. Update the app, allow third-party SSL certificates in Preferences > Network, and check firewalls and status.sync.com.
Most likely fix: Update the desktop app
How to fix it
// try these in order, the most common fix is first
FIX 1Update the desktop app
- 01Install the latest version from sync.com
- 02Sign in again and wait for it to reconnect
Did this fix it?FIX 2Allow third-party SSL certificates
- 01Open Sync Preferences
- 02Go to the Network tab
- 03Enable the option to use third-party SSL certificates
- 04Restart the app
Did this fix it?FIX 3Check firewall and antivirus
- 01Temporarily disable the VPN or proxy
- 02Make sure firewall or security software isn't blocking Sync
- 03On a work network, ask IT to allow Sync
Did this fix it?FIX 4Check for an outage
- 01Open status.sync.com
- 02If an incident is listed, wait for it to be resolved
Did this fix it?
Symptoms
The desktop app shows 'cannot connect to network' and stops syncing even though the browser works.
Why it happens
- C-01Network, VPN or proxy problems
- C-02Corporate SSL inspection or antivirus replacing certificates
- C-03Outdated desktop app
- C-04Firewall or security software blocking Sync
- C-05A Sync service outage
// this guide also covers
- sync.com cannot connect to network
- sync.com connection error
- sync.com not connecting
- sync.com offline
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