1 I cant start Microsoft Outlook or receive the error Cannot start Microsoft Outlook Cannot open the Outlook Window
Nona Seabolt edited this page 2025-10-29 00:07:38 +07:00
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One reason Outlook fails to launch is that youve installed faulty add-ins in the app. These add-ins may be working incorrectly, causing the app not to launch. If you can't choose any of the menu options, type inside an email message, calendar event, or contact, Outlook may have frozen. There are three steps you can take to try to get Outlook working again.

Ive since installed a Windows 2016 server with Office 2024 and I dont have any more connection problems for the moment. Since making this change, Im not seeing the errors in Microsoft-Windows-AAD/Operational, however it may be too early too tell. Hello all,Same problem here since Outlook 2016 update on January on RDS 2022, all users are not concerned, but we have more and more users impacted. The cache file is likely corrupt or where it is stored is full.

In some scenarios, doing so fixes the "Outlook will not open" issue. However, if installing updates doesnt fix the problem, then try to repair your Office programs. Then, you can try to start Outlook 2016 in Safe Mode and then check which add-in is causing Outlook issues, disabling that add-in.

If you restart it successfully, it will show you that one or more add-ins are defective. Now, it's time Fix Outlook Support to uncover them by the elimination process. Find solutions to common problems or get help from a support agent. 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. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

Make sure you close Outlook before you start Recovery Toolbox for Outlook. Try to download the newer version of our software and install it. Our software can recover data only from an existing file. You can try to restore your file with some unerasing software and then recover it with Recovery Toolbox for Outlook.

If its an RDS server and the cache is also on the server, if the server crashes, reboots abruptly, is full, there are many reasons. Instead of removing the profile, remove the OST file and let it recreate. Compatibility mode is suitable for older software with Windows 10 that fail to run normally.

Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities. To install the latest Windows and Office updates, click Fix Outlook Support the link below. Use the classic Outlook startup troubleshooter to diagnose and fix several common classic Outlook for Windows issues for you. A well-running Outlook will ensure that you enjoy the full benefits of this popular email program. If you follow the above solutions, your Outlook will perform according to your expectations. If the in-box Program cannot fix the corrupted Outlook PST files, you can also try Wondershare Repairit for Email.

Your Outlook profile holds all your account settings and data configurations. If this profile becomes corrupted, it might fail to load or cause Outlook to crash upon opening. Such corruption could result from improper shutdowns, software conflicts, or corrupted files within the profile. Youve probably already tried to start Outlook a few times, checked your internet connection, and restarted your device. But Microsofts email client still wont open, leaving you cut off from your important messages, schedule, and contacts. Microsoft regulatory releases new updates for Outlook and Windows (or macOS).

For more information about when builds are available for their respective channels, go to Update history for Microsoft 365. We're investigating the issue and will update this page when a fix is available. If you're using Outlook 2010, Outlook 2013 or Outlook 2016, uninstall and re-install iCloud to resolve this issue. 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.

There are three steps you can take to try to get Outlook working again. When you are unable to log into the add-in, or the add-in does not load correctly, uninstall then reinstall the add-in. We have multiple tools to help you automatically diagnose an issue, troubleshoot, and fix problems with Outlook. If you are having problems with Outlook, there are a few things we can help with to get you back to sending and receiving your email.

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 Fix Outlook Support to Outlook. We're working to make it possible to edit shared calendars in Outlook 2016 for Windows. If you uninstalled via add/remove programs, you may want to go more aggressive on it. TrustedTech is a Microsoft solutions Partner in the following areas. TrustedTech is dedicated to being a reliable resource for all software and technology support needs.