Microsoft Outlook is one of the prominent email clients that offer exclusive features to its users. It helps them to manage multiple email accounts in a single email client. Also, it provides features like calendars, contacts, tasks, events, etc. All these characteristics of Microsoft Outlook make the software incomparable.

Additional resources

• As repairing your Outlook account and removing and re-adding your account didn’t make any difference, I would next then suggest to "completely uninstall eM Client and delete the database" and reinstall & setup as new again.
• To clear the cache completely you need to run the Repair.
• If the clean boot didn’t work, you can remove and add your email account.
• If that doesn’t work, you can download the repair tool by following the instructions in the link below.
• To attempt to repair a corrupt office application, please click the link below.

And some serious bug is, at least, on my system. To clear the cache completely you need to run the Repair. Right click on your "Inbox" directly under your Outlook account, and then click "Properties" at the bottom.

Fixed – Outlook Stuck on Synchronizing Subscribed Folders

One such issue that many users face is synchronizing errors. You can resolve the problem by following various methods. But before learning those techniques, you should understand the reasons for the problem. If the clean boot didn’t work, you can remove and add your email account. But before you delete your account, remember to back up your data to avoid losing anything important. You can also speed up the process of reading IMAP messages by enabling repair PST file without data loss the option to "download messages for offline use including attachments" etc.

Outlook 365 Synchronizing Inbox Stuck Issue Explained

The most common reason for this problem is a poor or unstable internet connection. Make sure you’re connected to the internet and that it’s working smoothly. If your network is shaky, Outlook may struggle to synchronize your folders. Despite ESET being turned on or off, I don’t think it’s wise to have, especially on email clients, internet security being turned off with (spam) mails containing malicious links or rogue attachments. I would suggest to try completely disabling ESET Smart Security (if you haven’t already) and then open eM Client how to fix Outlook not opening today and see if it makes any difference.

Step 1: Remove the Email Account

As other users on this forum "have had issues with that program" expert Outlook tips by FixTechGuide in the past. As repairing your Outlook account and removing and re-adding your account didn’t make any difference, I would next then suggest to "completely uninstall eM Client and delete the database" and reinstall & setup as new again. It looks like there is something functionally not working to get the messages (bug??), without continuous syncing, from the Outlook-servers after (re)starting eM Client. Here are some common reasons for occurring Microsoft Outlook is Synchronizing Folders Stuck error. Now, we’ll look for the best ways to resolve it.