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on January 11, 2026
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As a result, Outlook may fail to update the Inbox or Outbox email folder. Also, any email sent to you or sent from your Outlook client will not be received or delivered. However, you can follow the solutions discussed in this article to find the cause and resolve this issue in Outlook. These troubleshooting tips can help you resolve common issues that prevent the new Outlook inbox from updating properly. If you continue to experience problems, consider reverting to the classic Outlook application or contacting Microsoft Support for further assistance.
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Please whitelist stellarinfo.com and request to send the link again. Restarting the computer, reinstalling office, creating new profiles - nothing works, it's working for some time, suddenly it's stuck. To work around this issue, use an Online mode profile for your Microsoft Exchange Server mailbox. If you then allow the synchronization process to fully synchronize the folder, the status bar may eventually indicate the following text. You can set it to a higher number if you desire / need but it works for a user who has 14 mailboxes. Once the system is connected to the Internet and the server is available, follow the next solutions to troubleshoot and fix the problem.
New Outlook app not updating Inbox
Use the following steps to re-enable the Send immediately when connected option. This problem can occur if the Send immediately when the connected option is not enabled, as shown in the following figure from Outlook 2016. To release an email stuck in your Outlook profile repair and recovery steps Drafts or Outbox folder, select one of the sections below. Here is a comprehensive list of possible causes for the error ‘Outlook inbox not updating’ and how they can affect the working of Outlook. By applying this sort order (which is default in Outlook), you'll be always seeing the most recent communications first. If the Inbox and Outbox folders start updating, you can switch back to Cached Exchange Mode.
Reset or repair new Outlook
They were both connected to office 365, when suddenly one day it said "updating inbox" and that's it. This setting is tied to the following registry data, so this setting can also be configured by an administrator through a modification of the registry. When this problem occurs, the message remains in your Outbox folder until you manually initiate a Send/Receive operation (for example, press F9 or select send or receive). To see if it is the same issue, open your exchange server’s event viewer and filter event 9646. This should fix the issue and Outlook should be able to update the Inbox and Outbox folders immediately. A vast community of Microsoft Office365 users that are working together to support the product and others.
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By applying this sort order (which is default in Outlook), you'll be always seeing the most recent communications first.If the issue is resolved, exclude Outlook processes, Outlook data files, and folder locations from your antivirus program.To work around this issue, use an Online mode profile for your Microsoft Exchange Server mailbox.When you synchronize your Exchange mailbox to an Offline Folder file (.ost), the Outlook status bar never shows higher than 3.99 GB when a folder is being updated.It stores a copy of mail items on the mailbox server in the OST file on the local machine.This problem should only occur on the initial synchronization of a folder that is larger than 4 GB.If the Inbox and Outbox folders start updating, you can switch back to Cached Exchange Mode.
Advanced troubleshooting for Outlook not updating problem
This problem should only occur on the initial synchronization of a folder that is larger than 4 GB. If the folder size is initially lower than 4 GB but then grows to above 4 GB over time, you will not see this problem through normal folder synchronization. The status bar indicates the amount of data being currently synchronized to the folder, so for existing folders above 4 GB, the incremental changes will be relatively small in day-to-day use. When you synchronize your Exchange mailbox to an Offline Folder file (.ost), the Outlook Fix Outlook and Office365 Sync Issues status bar never shows higher than 3.99 GB when a folder is being updated. For example, you may see the following text in the status bar when your Inbox folder is being synchronized with Exchange. This particular user has her own mailbox and then access to another shared mailbox.
It stores a copy of mail items on the mailbox server in the OST file on the local machine. The changes made in Outlook are stored in the OST file and synchronized frequently with the mailbox server. With automatic send/receive enabled and properly configured, you can maintain regular synchronization between Outlook and the email server, keeping your Inbox up to date. After looking into it more, as the user above stated, this seems to be cache related so I nixed that on the shared box too.
As of yesterday, the shared mailbox (for her only) is hung up on "Updating this folder" and will never update or receive new mail. Make sure the system has enough storage, especially the volume where the Outlook data file (OST) is stored. If you are running out of storage, make some space by moving some files from the storage to another folder or volume. You may also archive the OST mailbox to reduce the mailbox size. Follow these solutions to fix the Outlook stuck at updating the Inbox and Outbox folders issue.
In this article, you will learn the reasons that can trigger the ‘Outlook 365 stuck at updating mail folders’ issue and the solutions to effectively troubleshoot and resolve the issue. Is she able to properly access the shared mailbox through OWA? By taking proactive steps to manage your mailbox, you can prevent issues related to storage limits and ensure that your Outlook inbox continues to update properly. Since some weeks everyday another user calls and tells me he doesn't get mails. After hitting the update folders button or closing and reopen outlook new mails get visible. Reinstalled office, deleted ost, made a ne outlook profile.
Firewall or antivirus settings
For those utilizing the classic (old) Outlook application, this section addresses issues specific to this version. The value shown in the status bar has an upper limit of 3.99 GB, so this problem occurs when the size of the folder being synchronized is above 4 GB. Then, click on the Update Folders under Send/Receive tab to check if the synchronization issue is fixed and the folders are updating. If you didn't find Read Much more the email, check the spam/junk folder.