Click “OK” to close the window and commit the options.Uncheck the option “When displaying hierarchy in Outlook, show only subscribed folders.” at the bottom of the window.Do this for any other folders you wish to sync with the server. However, if you are sure the above is not the case, then try the methods below (number 2 usually works for us).Select “Templates” and click subscribe.Select the “All”tab as we are now going to sync folders we wish or need to sync.It may prompt about folders that cannot be unsubscribed, just click “OK” here.Hold shift and click the last item in the list.Select the first item in the list and scroll all the way down.The new functional limit will vary by Outlook's available resources and system configuration. The synchronization of the shared folders is improved so that Outlook will no longer encounter the 500 shared folders limitation, and Outlook should be able to accommodate up to 5,000 shared folders. Select all items in the list as follow: Lift the 500 shared folders limitation in Outlook.Click on the “Subscribed” tab and click the “Query” button.After setting up your IMAP email account in outlook, right click on your email account and select “IMAP Folders…”.This issue is because Microsoft Outlook downloads all messages every time including attachments versus a normal email IMAP application where only headers are synced to present crucial information only, and messages and attachments are ONLY downloaded and cached upon viewing the message or if the mail application is explicitly told to download all messages. I have many blogs almost about how my Outlook tips can help you fix an issue on your own.
HOW TO STOP OUTLOOK SYNCHRONIZING FOLDERS HOW TO
Folks, most of my blogs have a long-detailed list of how to fix an issue.
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Having many folders with many messages in Microsoft Outlook, especially if they have attachments, can be slow. Outlook 2016 Hangs on Synchronizing Folders.