This is the one main reason why your Gmail data is not syncing with Outlook. However, those who depend upon premium syncing services will not come across any such error. So, those who are using the free syncing feature would face problems with the same. But these services are no longer available for the use of Gmail or Outlook users as Google discontinued them in the year 2012.
Google Sync and Google Calendar Sync were the two main services provided by Google to sync the data of Gmail over Outlook. Solutions to Fix Gmail Is Not Syncing In Outlook Solution 1: Outdated Google Sync Services Read all the instructions carefully and know how to fix Gmail sync issues with Outlook. So, we have compiled a list of all solutions that will help you fix Gmail and Outlook synchronization issues. Though there is no one fix, you need to try multiple recovery methods and find which one works the best for you. Being that said, if you are not able to sync Gmail account settings, import Gmail contacts, delete emails, or move emails from one folder to the other, you need to know what kind of troubleshooting will work for you. Some might not be able to sync specific data while others face issues with the entire synchronization process. Are you not able to perform Gmail and Outlook synchronization? This problem is multifaceted.