Compatibility mode is suitable for older software with Windows 10 that fail to run normally. Thankfully, Microsoft Outlook is fully optimized for Windows 10, meaning Compatibility mode is not necessary. You might be wondering what happens when you switch on the Compatibility mode for Outlook. When you do this, your Outlook might have opening problems. For this reason, you should always turn off Compatibility mode for Outlook.

• 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 would like for me to fix this issue using our Secure Remote Assistance then customer care can setup a new case for us.
• If you are trapped in a similar situation that my Outlook is not opening, you may feel disturbed about the problem.
• Click the button below to download and install the Office uninstall support tool.
• If you follow the above solutions, your Outlook will perform according to your expectations.

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 resolve Outlook not sending emails fast 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

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 Office 365 Sync Errors Fix 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

This goes to prove that the problem came from your original Outlook profile. If you are figuring out how to fix "Outlook Not Opening," you will find several possible solutions. 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.

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

Microsoft Outlook provides a better experience for users. With great functionality, you can manage your email, contacts, calendar as you like. Check the solutions to fix "Outlook not opening" problem and Troubleshoot Office 365 Sync and Login Issues how to avoid "Outlook won't open" again. Thanks for bringing this to my attention and I can see the urgency of this matter. Open the application and sign in to your Microsoft application to activate.