In the first place, check whether your antivirus is up-to-date. Reliable and trusted antivirus software vendors do care about compatibility with Microsoft Office applications, so there why is Outlook not opening is a good chance that the issue is fixed in their latest update. If the above does not help, turn off the antivirus and see if it brings Outlook back to life.

It would get stuck at 82% and then she would turn it off. For awhile, when she did this, the system would try a system recovery installation and was successful until now. The navigation pane is the leftmost pane in Outlook where you'll find your folder list and the icons to move between Mail, Calendar, People, and Tasks. Running the /resetnavpane command removes all customizations to the navigation pane. Starting Outlook in safe mode, which starts Outlook without add-ins loaded, can tell you if an add-in why is Outlook not opening is the source of the problem. If the troubleshooter can't fix your issue, or if you'd like to fix it yourself, see the next section.

Hello everyone, I'm trying to do online repairs on machines, silently through command line commands. The repair does kick off and run, however I'm convinced, despite the command, it is only doing a quick repair. Here are some of why is Outlook not opening the reliable methods to restore Outlook 365 not working issue. Follow these methods step-by-step to overcome the issue. This software is also laced with advanced features, like filter option, scheduler option, etc. Users can also try its free demo version in their system to get more details on its features and working procedures.

As @ode2joy ​ said, clearing out the user’s profile usually works, which is a more thorough procedure than just deleting .nst and .ost files. When something goes wrong with Outlook, Microsoft why is Outlook not opening recommends that we start it in Safe mode. Simply that Outlook will be loaded without your add-ins and customization files. Originally, the freezing would only occur when I actually tried to do something. So, if I tried to open a message, search my inbox, write a new email, go to the calendar, etc., it would freeze up for about 5-10 seconds at a time. The freezing never seemed to occur when I had Outlook open but was not using it.

Things changed on February 1st, 2024 when Google and Yahoo started applying new email sender standards in an attempt to improve their users’ experience. Even with the correct SMTP details, the server might be down or malfunctioning. Understanding the specific error codes returned by the SMTP server can help diagnose the issue. Mistyped usernames or passwords can prevent successful authentication with your SMTP server, leading to failed email sends. To edit a shared calendar, go online to your own Outlook.com calendar, open Calendar for Windows 10, or use a mobile device. Read how to Add your Outlook.com account to another mail app.

You can determine if it's corrupted by creating a new profile and why is Outlook not opening changing which profile is used when Outlook starts. Use the classic Outlook startup troubleshooter to diagnose and fix several common classic Outlook for Windows issues for you. To work around the issue, you will need to end all Office processes that are running and disable the presence features.

Repeat the process for all the add-ins that were selected earlier and wait until the Outlook crashing problem repeats. Should you decide to remove a profile, back up the data files first. All offline cached content will be deleted when you choose Remove. For more information, see Introduction to Outlook Data Files (.pst and .ost). The steps to access the repair tool vary depending on your operating system.

We will ensure that all information is retained and only contacts with matching information in all fields will be cleaned up. To check if you have received the fix, review your contact list to confirm duplicates have been removed. Add an Outlook.com alias to your account and send email to Gmail users using that alias.

Even if an email address is spelled correctly, a message cannot be delivered if such a mailbox doesn’t exist. Usually, a message of non-delivery will be generated, which will include important details about the delivery problem. When people complete a subscription form, they may enter their email address incorrectly.

Rohan Wiese is a Technical Content Writer at Aryson Technologies, specializing in databases, e-mail recovery, and e-mail migration solutions. But little tools that add extra features to Outlook can be the reasons for Outlook corruption. Also, you can recover permanently deleted items and attachments from Outlook with the help of this Outlook repair tool. You can even migrate PST files to Office 365, email servers, and web email clients with the help of this software. We hope you now clearly understand the reasons why users need to repair Outlook profiles for Office 365 accounts.

Follow the prompts to complete the installation process. Find the Microsoft 365 app and right-click on it to see the available options. You will see two options – Change and Uninstall. A vast community of Microsoft Office365 users that are working together to support the why is Outlook not opening product and others. Select faulty or incorrect add-ins and click Remove.