If the troubleshooter can't fix your issue, or if you'd like to fix it yourself, see the next section. However, if you encountered other issues like Outlook not responding, learn how to fix Outlook not responding here. If you do everything properly, Outlook will open when you use the new profile.

• If you are figuring out how to fix "Outlook Not Opening," you will find several possible solutions.
• Knowing the cause of the problem will help you sort out all the issues related to Outlook opening.
• Check the solutions to fix "Outlook not opening" problem and how to avoid "Outlook won't open" again.
• My goal is to provide you with excellent service.
• I see you have not had a chance to get back to me with the information I requested.
• Uninstall the Microsoft application restart the device and re install the Microsoft application and restart the device.

Older versions of Outlook may be out of support

Starting Outlook in safe mode, which starts Outlook without add-ins loaded, can tell you if an add-in is the source of the problem. Upgrade to Microsoft Edge to Outlook profile repair and recovery steps take advantage of the latest features, security updates, and technical support. Click the above link to have a quick download, then you can have Outlook errors fixed within minutes.

Why Won't Outlook Open?

A vast community of Microsoft Office365 users that are working together to support the product and others. I understand that your Office applications are not working. Please feel free to refuse additional offers, they are automatic forms that come from our website and not from my own. I see you have not had a chance to get back to me with the information I requested. Given what limited information you have provided, I believe this may help your situation. If this isn't what you were looking for, please respond and we can continue to troubleshoot until we find the right answer.

My Outlook won't open. It's an on-going problem. This time, though, when I shut down my laptop, and rebooted it, I am

You can run the Inbox Repair Tool (scanpst.exe) to scan your Outlook data files and repair errors. Are you having trouble starting Outlook or receiving "Cannot start Microsoft Outlook. Cannot open modern authentication troubleshooting the Outlook window" error messages? We can fix the problem for you, or you can use the troubleshooting steps we're providing below to help resolve these startup issues. Here's the deal, when Outlook manages to open, all the files you delete will automatically be recreated. It gets better because you also resolve all the Outlook opening issues. Please follow the steps specified in the below link.

Getting Started Is Easy

Running the /resetnavpane command removes all customizations to the navigation pane. Please go to Create an Outlook profile for steps on how to create a new Outlook profile, then continue with how to use a different profile. With the window with the Windows Update, you will see all the updates you need to make for your Microsoft Office.



If you would like for me to fix this issue using our Secure Remote Assistance then customer care can setup a new case for us. Occasionally, that profile can become corrupted. You can determine if it's corrupted by creating a new profile and 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. If you restart it successfully, it will show you that one or more add-ins are defective.

How to Avoid the "Outlook Won't Open" Problem?

If anyone finds a more permanent solution, I would appreciate it. It seems like something went wrong on Microsoft update and they might recall it or fix it, so we might need to wait untill that. If online repair didn't work, you mailbox not updating on IMAP need to reinstall your Office application.