iOS Sync failure - sync lock found that's older than two minutes

Trying to sync on an iOS 13.3 device with Codebook 4.02 and keep getting the “sync lock found that’s older than two minutes” error and sync fails. No other devices are syncing. Been trying for 24 hours now, same problem. Was working fine before this occurred.

Hi @wibblewibble

Sorry about the trouble you are experiencing. Are you syncing Codebook for iOS with a cloud service such as Dropbox, or Google Drive, or are you syncing to Codebook on the desktop using local WiFi?

Google Drive.
Now resolved once I’d loaded up Codebook on the PC that must have been hogging the lock.

Hello @wibblewibble

Thank you for the update, we are happy to hear everything is working properly for you now!

Alas this problem is coming up again now, and at present I cannot resolve it. It’s syncing iOS and 3 PCs with Google Drive.
And now waited a bit of time and that message has gone but now getting the “sync lock found that’s older than 2 minutes” message, which again I can’t clear.

Hi @wibblewibble

I’m sorry to hear about the trouble. Can you tell us about the specific sync scenario that is causing an issue?

Hi, I fixed it again. This time by going into Google Drive and deleting about 10 sync lock files. It then worked.

FYI This has only started happening since late December, after the recent big update.

Hi @wibblewibble

Thanks for letting us know. Would you mind reaching out to us at, we’d like to dig into this a bit further. Thanks!