How do I fix Gmail sync error currently Experiencing Problems?

Try common sync solutions

1.     Check that auto-sync is on. If you want sync to happen automatically, keep auto-sync turned on.
2.     Make sure your internet connection works.
3.     Check whether you're having account issues.
4.     Check for Android updates. 
5.     Remove & re-add your account.
6.     Force sync your account.
7.     Clear cache & data.

If you use a rooted device and you have syncing problems, try the following fix:

1.     Go to Settings > Accounts > Exchange > Incoming Settings.
2.     Change the security type from SSL/TLS to accept all certificates.
3.     Wait and see if your emails, contacts, and calendar entries start syncing up.

How do I fix Gmail sync error?

Troubleshooting steps

    Step 1: Update your Gmail app. To get the latest fixes on problems with sending or receiving mail, update your Gmail app.
    Step 2: Restart your device.
    Step 3: Check your settings.
    Step 4: Clear your storage. 
    Step 5: Check your password.
    Step 6: Clear your Gmail information.

Why is my Gmail not syncing?

Open the Gmail app, and tap the menu button in the upper left corner -> Settings. Tap on your account and make sure you've checked “Sync Gmail.” Clear your Gmail app data. Open your device's Settings app -> Apps & Notifications -> App Info -> Gmail -> Storage -> Clear Data -> Ok.

How do I fix Sync is currently experiencing problems?

Try common sync solutions

1.     Check that auto-sync is on. If you want sync to happen automatically, keep auto-sync turned on.
2.     Make sure your internet connection works. 
3.     Check whether you're having account issues. 
4.     Check for Android updates.
5.     Remove & re-add your account. 
6.     Force sync your account.
7.     Clear cache & data.