Run TB in safe mode (hold Shift when you launch TB) and see if it makes any difference. Note also that when you click Get Messages, only the currently selected account is checked; click the drop-down to check a specific account or Get All New Messages (Shift+F5). The setting isn't present for folders that are automatically checked, such as Inbox. See the attached picture for the Properties window for a user-created folder. If these methods do not work, then contact the support team of your email provider. So, here are the solutions you solve the problem of the IMAP folder not syncing.

Why IMAP Folder is Not Properly Syncing?

Look at the mail server settings boxes for password and port settings they’re the ones you need to delete and reapply. I will try the safe starts and experiment with the buttons ans see if it improves. I am using TB for just three weeks now and I have issues daily when sending fix MFA prompts not working mail with no attachments the outgoing mail server will time out. Since the sync issue is universal it appears to be a global issue.

Chosen Solution

A primary way to compromise an O36 user is phish a user, steal their creds, and connect via IMAP to get a copy of a whole mailbox. Upgrade to Microsoft Edge to take advantage Exchange connectivity diagnostic of the latest features, security updates, and technical support. Intermedia has been recognized by J.D. Power for providing "An Outstanding Customer Service Experience" for its Assisted Technical Support.

IMAP folder sync issue in the new Outlook (moved emails not syncing to webmail)

Microsoft Outlook is terrible in IMAP. Hence most people only use MAPI with it. If you are forced to use IMAP, I would recommend switching to an alternative E-Mail client like Thunderbird Thunderbird — Free Your Inbox.

• Windows 10 will reach EOS (end of support) on October 14, 2025.
• But many users run into the problem where their important IMAP folders are not syncing or stop updating.
• It's not until I click on that folder I will then see the 10 and 3 and two second later it will sync and new ones will populate.
• After that, it is also important to secure your IMAP folder to prevent this issue from happening in the future.
• I am using TB for just three weeks now and I have issues daily when sending mail with no attachments the outgoing mail server will time out.
• Make a note of the values and delete an overwrite them also check your passwords for both SMTP and IMAP.
• I checked all 5 of the tabs in this window that expressions is not there.
• Wonder if the vpn is causing an issue.

My accounts in Mail app stopped to sync post update

When you are dealing with any problem, it is important to understand the reasons behind the issues. Below are some causes that contribute to the problem. There are various variables at play here however, generally speaking, Outlook performs best when operating as a front end for Microsoft Exchange and Gmail when accessed via a web browser. I’ve never heard of setting a path before for email, so apologies if this is a simple solution to those who come across this in the future. If connection status shows disconnected you can, turn off IMAP, require 2FA, and use the native outlook client. Hate to be a Debbie Downer, but why are you using IMAP?





Wonder if the vpn is causing an issue. Perhaps something in TB needs to be tweaked. I have no firewall monitors running during the day that would interfere just the vpn. I have several email accounts / IMAP set-up. So looking at my tree of email accounts one inbox might have 10 mail total and 3 unread form earlier.