Troubleshoot sync issues on iOS

Your sign-in information is outdated (e.g. you recently changed your password or turned on 2-step verification for your Google Account).

If you have changed your Google Account password, follow the steps below:

1. Enter your Google Account username and the new password.
2. If prompted for a passphrase, enter your previous Google Account password. If you used a custom passphrase, enter that instead.

If you have enabled 2-step verification, follow the steps below:

1. Touch the button on the error message for exact details.
2. If you're prompted to sign in, enter your Google Account username and password. Do not enter an application-specific password here.
3. You will be asked to enter a verification code. Generate a verification code on your device and paste it into the dialog. Note: Application-specific passwords are not the same as verification codes.

You will see this message when you set a custom sync encryption passphrase or have recently changed your Google Account password.

If you’ve set a custom passphrase on one device, you’ll need to enter the same passphrase on all of your other syncing devices. On other syncing devices, you may see an error prompting you to update your passphrase.

Follow these steps to fix this issue:

1. Touch the Sign in settings button on the error message.
2. In the "(Services) Advanced" dialog, under the "Encryption" section, you will see one of the following:
   • "You already have data that is encrypted using a different version of your Google Account password.” If you see this message, enter your previous Google Account password.
   • “You already have data that is encrypted with a passphrase”. If you see this message, enter your custom passphrase.

If you no longer have access to your custom passphrase, you’ll need to reset sync.

1. In the Chrome menu, touch your email address, Advanced, and Reset Sync via Google Dashboard.
2. In the Chrome Sync section, touch Reset sync. This step will remove the data from Google’s servers.
3. Wait a few minutes before signing in to Chrome and re-enabling sync on your devices.

You are likely using a Google Apps account to sync. Check with your administrator that the sync feature is enabled for the domain, or use a regular Google Account to sign in.

You will see this message if you have just recently reset sync through the Google Dashboard. Please wait for a few minutes and check that there is no Chrome Sync data listed in your Google Dashboard before signing in to Chrome.

It’s likely that one of your data types is having trouble syncing. Remove and re-add your Google Account.

1. Touch Chrome menu > Settings > your email address.
2. Touch Manage Accounts > Manage.
3. Touch the x next to the Google Account you want to remove. 
4. In the confirmation dialog that appears, touch Remove.
5. Force close Chrome.
6. Restart Chrome.
7. Touch Chrome menu > Settings > Sign in to Chrome and re-enable sync on the device.