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.

• You might be wondering what happens when you switch on the Compatibility mode for Outlook.
• This goes to prove that the problem came from your original Outlook profile.
• 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.
• Given what limited information you have provided, I believe this may help your situation.
• Follow the steps below to download the uninstall support tool according to your browser.
• When you do this, your Outlook might have opening problems.
• It is a powerful and almighty software that can be applied to fix corrupt Outlook PST files in any scenarios.

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 credential loop in Microsoft 365 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?

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). If you are trapped in a similar situation that my Outlook is not opening, you may feel disturbed about the problem. If Outlook is NOT able to start in safe mode, then try the next proposed solution below, entitled Create a new Outlook profile.

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

Click the button below to download and install the Office uninstall support tool. Try to restart your computer and check if this corrects the problem, if not, you might need to repair your MS Office. Welcome to JustAnswer.com, an independent, paid-support, question & answer service that is not affiliated with any other company. Sorry to hear you're having problems, my name is David, and I will do everything I can to help you find the information you need. Find modern authentication troubleshooting solutions to common problems or get help from a support agent.

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.

Repair corrupt Outlook data files

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 online Outlook email repair utility need to reinstall your Office application.