Sync issue #99039

https://thebrain.zendesk.com/agent/tickets/99039

Hello HeeDong,

Thank you for explaining the situation in detail. I understand how concerning this is, especially knowing that your local Brain contains about 20 days of newer work that has not been syncing.

The most important thing right now is to restore healthy sync first before making any upgrades. Installing version 15 while sync is still failing can introduce additional risk, since the cloud state is currently older than your local data.

Let’s take this step by step.

First, please stay on TheBrain 14 for now.

Next, please do the following on your Windows 11 machine:

1. Open your Brain in TheBrain 14
2. Go to File → Utilities → Data Integrity Scan
3. Let the scan complete fully
4. After the scan finishes, try syncing again
5. Quit TheBrain completely

Then please send us your log file from this location:

C:\Users[your username]\AppData\Local\TheBrain\Logs\Output.log

In your reply, please also let me know:

• Do you see any sync error messages when you try to sync

• Does the sync icon show any warnings or failures

• Did anything unusual happen around November 26 when sync last succeeded

You did the right thing by backing up your Brains folder already. That keeps your local data safe.

Once we identify and resolve the sync blocker and confirm that syncing is working normally again, we can safely move you to version 15. After that, we can also discuss sync options such as Light Sync if needed.

Please send the log file and answers when ready, and I’ll take it from there.

Best regards,

John