My computer (running Windows 11 Pro) forced an update about two weeks ago. Since the update, my Outlook will not return to "new" Outlook, it deleted my email signature, and is incredibly delayed in getting messages. I am opening the "classic" Outlook app on my computer because the one labeled new seems to not actually be a functioning app (no icon, nothing happens when I click on it). When the Outlook app opens, I can see the 'Try the new Outlook' toggle. The toggle just turns back off and the app does nothing different. I saw a reply to an issue similar to mine that mentioned going to the Registry Editor and followed instructions outlined in that message but nothing change


Which means that you won’t be able to receive new messages. So the Fix Outlook Not Opening After Windows Update email you’ve been looking for might just be sitting in the Other tab of your inbox. Fortunately, you can change how your messages get organized. Outlook needs a working internet connection to reach its email servers. If you lose your connection to the internet, classic Outlook won't be able to send your messages. You may need to open the message and send it again or choose Send/Receiv


By the end, you’ll know exactly how to restore your Outlook and prevent future errors. If your Microsoft Outlook won’t open after a recent Windows update, you’re not alone. Fix Outlook Not Opening After Windows Update Many users encounter startup freezes, profile loading loops, and crashes following major Windows patches or Office update


For some users, e-mails do not arrive without manually sending and receiving them. If you are having sync issues, you can force a manual sync by selecting the Sync button via the View tab on the Ribbon. A status message appears at the bottom of the message list while Outlook is syncin


If you’re using Microsoft 365, you can also check real-time server status on the Microsoft Service Status page. Outlook Add-ins are designed to enhance functionality, but some can conflict with email operations, particularly when sending or syncing messages. Find solutions to common problems or get help from a support agen


If you typically use an Outlook.com account for email, this issue can occur if there are multiple aliases on the account and the 3rd party email address is the primary alias. There is a new version of outlook that is web based, but still works like an Fix Outlook Not Opening After Windows Update app, and has less problems. This solution prevents display rendering errors that occur after driver or DirectX update


It’s harmless and resolves 30% of stuck startup issues according to Microsoft community reports. Until you can install the Windows Update fix release, you can set a registry key that will cause Outlook to stop using the local Windows Search service. 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. We're investigating the issues and will update this page when a fix is availabl


We're investigating the issue and will update this page when a fix is available. MAPI does not validate that a provider's DLL that it is requested to load is registered correctly in MapiSVC.inf or even that it comes from the local machine. This can be exploited by creating a file together with an OLE object in such a way to cause MAPI to load a DLL from a network share when the OLE object is activated. If you're using Outlook 2010, Outlook 2013 or Outlook 2016, uninstall and re-install iCloud to resolve this issu


Ensuring your internet connection is stable and reliable is the first step in troubleshooting Outlook’s email-sending issues. If the connection is stable and you’re still having problems, you might want to check out the other fixes mentioned here. Repairing your Outlook profile can fix various issues related to email sending and ensure your account settings are correctly configured. Microsoft regularly releases updates that include bug fixes and performance improvements. Ensuring the correct outgoing server settings, port numbers, and encryption protocols prevents miscommunication with your mail serve


Please go to Reset a forgotten Microsoft account password for more information. We've presented the methods in order of quickest to most in-depth. For details around general troubleshooting, visit Troubleshooting Outlook issues for more information. To get support in Outlook.com, click here or select Help on Fix Outlook Not Opening After Windows Update the menu bar and enter your quer


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