To update it manually, you need to click on the Send/Receive tab on the top of the Outlook screen and click on the Update folder option given there. Sometimes due to poor internet connectivity and other reasons the content and folders in Outlook do not get updated automatically. Solution 1– Try updating folders manually. Outlook has lost the connection to the Exchange Server.

The auto-update feature is disabled by the user.There is an interruption in the synchronization.OST file update is slow due to the large size of the file.There can be several key factors behind the issue Outlook stops updating the Exchange mailbox folders: Causes behind the ‘Outlook not updating mailbox folders’ issue But some problems can occasionally arise due to several reasons, and here we are going to discuss updating issues with Exchange. Basically, when the user opens Outlook, all the mailbox folders are updated. Recently, some of our clients told us that they are facing one issue where Outlook is not updating such mailboxes that are associated with Exchange. With Cached Exchange mode, the Exchange mailbox will be accessible in Outlook even when the connection is down. MS Outlook can incorporate multiple email accounts from different servers, including web mails and MS Exchange.

Cant upgrade to outlook 2016 error