The full guide.

Before you press Smart Sync or Full Sync anywhere in the dashboard, glance at the two status pills at the top of the page. They tell you whether the command will actually run or just sit in a queue.

Two pills sit above the tab strip on every signed-in page: Windows Tunnel and Tally. They update live, so you do not have to refresh the page to see a change.

Windows Tunnel#

• Live (green dot). The Windows app is running on your PC and is reachable from the cloud. Sync commands are picked up within a few seconds.
• Offline (red dot). We cannot reach the Windows app right now. The usual reasons are the PC is asleep or shut down, the app process was killed, the app crashed and was not restarted, or that PC has no internet.
• Not connected (grey dot). No Windows app has ever been paired to this account. Open Register Tally Devices and pair one.

Tally#

• Connected (green dot). Tally Prime is running on your PC and the Windows app can reach its HTTP gateway.
• Not running (red dot). The Windows app is online but Tally Prime is not open on that PC. Open Tally Prime, then the pill flips to Connected within a few seconds.
• Waiting (grey dot). We have nothing fresh to report about Tally. This is what you see whenever the Windows app itself is offline. We are not claiming Tally is in any particular state because we cannot ask.

What actually happens when you sync while the tunnel is offline#

You can still press Smart Sync or Full Sync while Windows Tunnel reads Offline. The command does not fail straight away.

• The command lands in the cloud queue and shows up as Queued in the Active jobs panel.
• Tally is not touched and Tally does not freeze. The freeze you sometimes hear about only applies while a sync is actively pulling data through Tally Prime. With the Windows app offline, nothing is being pulled.
• The Windows app cannot freeze either, because it is not running. Or if only the network is down, the app sits in its poll loop quietly retrying every few seconds.
• If the Windows app comes back online within 60 minutes, it picks the command up and the sync runs normally. At that point Tally does become busy for the few minutes of the actual sync.
• If the app stays offline past 60 minutes, a background reaper auto-fails the command with queued_timeout. The Active jobs row flips to Failed and the message line explains that no Windows app picked the command up in time.

Bottom line: green plus green and you are safe to sync. Anything else and the command will queue or stall. Always check both pills before you press a sync button.