I cant start Microsoft Outlook or receive the error Cannot start Microsoft Outlook Cannot open the Outlook Window

If Outlook works fine now, you know one of repair Outlook data file those add-ins was the problem. Next, you can go back and turn them on one at a time. So, it will be helpful to find out which one caused the issue. In short, even small things can make Outlook stop working. But the good part is, you can fix most of these problems with simple steps.

Add-ins are extensions that you can install to enhance Outlook’s functionality and unlock additional features, like CRM integration. But these add-ins can sometimes result in compatibility issues, especially if they’re not up-to-date or poorly coded. A conflicting add-in might cause Outlook to freeze, crash, or not open at all.

The best part is that you are spoiled for choice because some are quick to implement while others are time-consuming. This section introduces solutions that you can use when Outlook 2016 or Outlook 2013 is not opening. If none of the above steps work, the issue may be more complex or related to server-side problems that only Microsoft can resolve. Find solutions to common problems or get help from a support agent.

Users can effortlessly use repair Outlook data file this software to recover their damaged or orphaned PST files in Outlook and resolve related errors. The topmost part of this wizard is that you can easily recover PST Files up to 80GB, or in simple terms, there is no limitation for file size. The password error issue of Outlook is the most frustrating error or glitch that users are facing nowadays. Outlook constantly shows an error regarding the password with a notification after closing it simultaneously. The reason behind the error is that users have to set passwords as the files may contain crucial information. Problems with the device, connection to power, network issues, viruses or malware, oversized files, and improper shutdowns all cause the PST file to act up.

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. Currently, you can’t use Outlook on Windows to edit calendars that are shared with your Outlook.com account, even if you’ve reconnected your Outlook.com account to Outlook. We’re working to make it possible to edit shared calendars in Outlook 2016 for Windows. Hello, I created a case with Microsoft and the answer appears to be unchecking the Turn on shared calendar improvements option in your Outlook. Customers with only a 3rd party email address set up as the username of their Microsoft Account will be asked to add a 1st party Microsoft alias to their account before accessing Outlook.com.

Another options is to use the Filter Email button on the ribbon. See and manage the tasks in the selected list from this window. Right-click a task for a list of options, or select a task to see and manage its details. Under Calendars, My calendar is the default selection and displays the calendar in Month view.

If so, wait a short time (usually two or three minutes) to see if Outlook starts working again. We can say that you will likely need to reinstall your software and reconfigure the firewall settings. Often there is the option to add sites to a whitelist, and you can give more permissions to Outlook. It might be that Outlook is not responding, or it’s not loading.

You can limit the synchronization window that’s used for calendar folders to reduce the number of items that are stored locally in your calendar folders. Use the Turn on shared calendar improvements option for users who have edit permissions to a shared calendar to improve performance. When you enable this option, calendar actions are sent directly to the server instead of having to be synchronized from local storage. I even reduced mailboxes sizes and that didn’t help, I setup a new user (albeit existing PC but new windows profile), and he is having the same issues. If the mailboxes open automatically after removing them and restarting Outlook, they may be auto mapped. This setting can be changed by an Exchange admin by submitting a repair Outlook data file request via Jira and including the usernames of the client and the usernames of the mailboxes that need to be removed.

When this registry key is set, Outlook will use its own built-in search engine. The built-in search will display the message below to indicate it is not using the Windows Search service. The issues documented in this section have been reported after installing the recent updates listed below.

If Outlook is NOT able to start in safe mode, then try the next proposed solution below, entitled Create a new Outlook profile. Use the classic Outlook startup troubleshooter to diagnose and fix several common classic Outlook for Windows issues for you. For that, choose Start, type Outlook.exe /safe, and press Enter. This will helps you to reach a solution for Outlook not responding, stuck at Processing, stopped working, freezes or hangs issues. Currently, you can’t use Outlook on Windows to edit calendars that are shared with your Outlook.com account, even if you’ve reconnected your Outlook.com account to Outlook. We’re working to make it possible to edit shared calendars in Outlook 2016 repair Outlook data file for Windows.