Things changed on February 1st, 2024 when Google and Yahoo started applying new email sender standards in an attempt to improve their users’ experience. Even with the correct SMTP details, the server might be down or malfunctioning. Understanding the specific error codes returned by the SMTP server can help diagnose the issue. Mistyped usernames or passwords can prevent successful authentication with your SMTP server, leading to failed email sends. To edit a shared calendar, go online to your own Outlook.com calendar, open Calendar for Windows 10, or use a mobile device. Read how to Add your Outlook.com account to another mail app.

Then, right-click a selected file and choose "Delete" (a trash can icon). You might need to set Windows Update to automatically download and install recommended updates. Installing any important, recommended, and optional updates can common Outlook startup issues often correct problems by replacing out-of-date files and fixing vulnerabilities. To install the latest Windows and Office updates, click the link below. In Windows, Outlook not opening errors can disrupt email communication, which can negatively affect productivity and business operations.

After updating Office, you may experience a brief flashing window every hour, which triggers the OfficeBackgroundHandlerRegistration task to start running. In this case, sign in to the Microsoft 365 portal by using your administrator credentials, and then select service health to determine whether other customers are experiencing the same issue. If other customers are experiencing the issue, the issue should end when the service-interrupting event is resolved. If you’d like to share any feedback about this article, please let us know.

Additionally, it permits users to convert the first 50 items per folder for free, providing a convenient way to test the tool's capabilities before committing to a purchase. The second possibility of receiving this error message is the synchronization issue. If your account has common Outlook startup issues the latest version of Hotmail Outlook connector,still you are receiving this error message,then follow these steps to fix the synchronization issue. Opening Outlook in Safe Mode can help in bypassing issues caused by add-ins, extensions, or a corrupted user profile.

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. This issue affects Outlook 2007, Outlook 2010, Outlook 2013, and Outlook 2016. After installing the September Public Update, Outlook 2007 displays mixed languages in the user interface. Follow along with the video below to see how to install our site as a web app on your common Outlook startup issues home screen.

Microsoft says Office users may experience problems launching Outlook and other apps on Windows 10 and 11 due to conflicts with antivirus software after installing the latest Patch Tuesday update. I did every solution what was written in this community, but this didn't resolve my issue. A common Outlook startup issues vast community of Microsoft Office365 users that are working together to support the product and others. Then, each item in your calendar folder is checked for known problems that can cause unexpected behavior, such as meetings that seem to be missing.

In addition to smart repair and common Outlook startup issues recovery, the tool allows users to save mailbox items to various destinations like Exchange, Office 365, Gmail, etc. If none of the above methods fixes the ‘Outlook not responding’ problem, then there are chances that the Outlook PST in your Outlook profile is corrupt. In such scenarios, you need to repair the corrupt PST files. Check if the Outlook Will Not Open in Windows 10 error is now gone, by launching Outlook 2016. After you delete the Outlook App Data folder, we suggest you restart your system first and then, open Outlook. When the resetnavpane command is executed, what it does is it resets and removes all the customizations related to the navigation pane.

Be aware that if you are connecting to an Exchange Server mailbox, your mailbox or your email messages are already being scanned by antivirus software on the server. For more information, see You may experience application pauses if you have a large Outlook data file. Optionally, if you have a Microsoft Exchange online archive, you can move items to that archive or create retention policies to automatically dispose of older items.

While the above-stated methods occasionally make some difference, they are, however, adversely tainted by significant limitations. Hold the Ctrl key and drag-and-drop the items into the folder of common Outlook startup issues the new PST file. Name the new PST file, choose a save location, and click 'OK'. After the repair, a 'Repair Complete' popup will appear; click 'OK' to finish. Convert recovered PST data to PST, EML, MSG, HTML, and other file formats. Now you’ll have a fresh profile that should work properly if the old one was the problem.