That is as and when the Outlook sends and receives emails or any other folder is updated, simultaneously it even updates the Exchange Server about these changes.

Depending on your email account settings, the amount of Outlook data, and several other reasons, the synchronization process may be stopped due to a large OST file.

In such an instance, Outlook wont let you receive and send emails from your Outlook profile.

You need to fix the issue at the earliest to avoid further damage.

So, follow the steps given in the below section and know how you can fix the Outlook email sync issue.

However, before trying to fix, convert the OST file to PST using OST to PST converter tool and backup the Outlook data.

To check whether your OST file is being synchronized or not follow the below steps.

If the number of items differs in both the sections then, you will have to verify the profile settings.

Follow the steps given to know how you can re-synchronize Outlook.

You might not be able to see this folder unless you set it as visible.

To fix this, you will have to create a new OST file and try to re-synchronize all the folders.

For this, you have to first rename the old OST file, create a new one and then synchronize the new.pst file with the Microsoft Exchange Server mailbox.

This will fix Outlook 2013 Sync issues, sync issues in Outlook 2016, 2010, and previous versions.

Specify the location of the corrupt OST file and thats it, the tool will perform the entire repair process and gives you a healthy OST file, with data intact.

When done, your Outlook will function properly without any Outlook sync error.

At such a time remember that fixing error 0x800ccc0f in Outlook is easy.

He loves to write, edit, and manage content for users trying to troubleshoot and fix problems on Windows, Outlook, storage drives and Cloud storage networks.

Fixing various hardware problems on computer and storage devices along with a great knack for fixing Outlook errors, Tony is also the fun-time IT guy for all his work friends.

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