Once the system is connected to the Internet and the server is available, follow the next solutions to troubleshoot and fix the problem. They were both connected to office 365, when suddenly one day it said "updating inbox" and that's it. You should always use NTLM over Basic authentication, as Basic sends the username and password in the clear, and NTLM is Windows Authentication. On Exchange 2013, you also have a new option called Negotiate, which is recommended.

Check Disk Space

Please make sure you set both the ClientAuthenticationMethod to NTLM and IISAuthenticationMethods to Basic,NTLM (and Basic,NTLM,Negotiate for Exchange 2013). 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. A vast community of Microsoft Office365 users that are working together to support the product and others. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

• These troubleshooting tips can help you resolve common issues that prevent the new Outlook inbox from updating properly.
• Only this one user has experienced this problem since the first week of our migration, but there were 3 initially.
• 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.
• The connection to Exchange drops, reconnects every few seconds or so until eventually the issue clears up.
• Outlook alternates between "Updating this folder" and "Trying to connect".

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For those utilizing the classic (old) Outlook application, this section addresses issues specific to this version. 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 the email, check the spam/junk folder. Please whitelist stellarinfo.com and request to send the link again. Restarting the computer, reinstalling office, creating new profiles Fix Outlook Not Opening After Windows Update - nothing works, it's working for some time, suddenly it's stuck.

Internet connectivity issues

Client logs and RPC logs on Exchange just show frequent connections and disconnections for the affected user, and I can’t find any other errors. Open RPC connections on Exchange during business hours is about 300 which seems manageable. If some of these Exchange PowerShell commands error out, don’t worry, these are to provide everything from Exchange 2013 back to 2007. In this guide, we’ll take you through simple, Office 365 sync problems and login fixes step-by-step methods to identify the issue and fix Outlook’s sync problem efficiently. Free up your time from routine correspondence with personalized, easy-customizable, dynamic email templates.

Check Outlook Email Account Settings

The next thing to check is the Virtual Directories and the Client Access credential loop in Microsoft 365 Server Autodiscover URI and fix them accordingly too. All InternalUrl and ExternalUrl’s should be setup using the hostname mail.domain.com (assuming mail.domain.com is the OWA URL that you chose). You need to make sure your OutlookAnywhere and AutoDiscover settings are setup properly along with Split-DNS. OutlookAnywhere and Split-DNS are vital for future-proofing your Exchange configuration and making it work properly now, regardless if you use Exchange 2007, 2010, or 2013. For Exchange 2013, OutlookAnywhere is a requirement and Split-DNS is Best Practice.





Per the article below I updated the Ethernet drivers on the the server to the most recent version and the MTU was automatically set to 1500. Not sure why only certain machines were affected but at this point I’m keeping my fingers crossed. Turning off cached Exchange mode works, but the connection seems to be spotty as Outlook will freeze up after a while. Rebooting, deleting the OST and/or mail profile does not have any effect. Things work well for a number of days or weeks but the problem reoccurs eventually.

Outlook: featured articles

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. The only other thing that I experienced was the ‘bitness’ of some outlook plugins or their application via gpo. Please provide the output from the following commands so that we can check to make sure your settings are set up correctly.



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. I reimaged the machine of the lone person that continued to have this problem and Outlook has been working OK for the time being. However, the problem cropped up again yesterday for a new user. The connection to Exchange drops, reconnects every few seconds or so until eventually the issue clears up. Interestingly, during this time I was unable to connect to OWA using a different mailbox on the affected client computer.