Outlook may fail to open email due to corrupted Outlook profiles, add-ins, damaged OST/PST files, or outdated software. Antivirus conflicts and system issues can also cause startup errors or loading failures. This startup issue often appears when profiles get corrupted, damaged Outlook Outlook not opening on Windows 10 files, add-ins conflicts with system updates or antivirus. Outlook stores all your email messages, meetings and events, contacts, and tasks in data files.

This means Outlook will run with limited features and without any add-ins enabled. After that, Outlook will check for and install any available updates. Once the Outlook update process is complete, reopen the Outlook application.

This at least allowed me to see if it was a plugin issue. You could try going into Mail (Microsoft Outlook) (32 bit) app in Control Panel and delete the Outlook profile then open Outlook and allow it to create a new one. TrustedTech delivers unbeatable customer service, with experts Outlook not opening on Windows 10 in licensing and high-level technicians always on-call to answer your tech issues in-depth. The instructions given in the error will seldom actually fix this issue as the issue is more likely to be caused by the add-in itself, rather then by an Outlook installation issue.

If you're tired of different bugs slowing things down or dealing with corrupted files, we are happy to show you how Mailbird can give you a better experience. The bad news is that the ScanPST.exe program doesn't work for severely corrupted files. You'll need to acquire a recovery tool designed for bigger jobs. Search "PST Repair Tool" and you'll find many reputable programs who know how to fix this Outlook issue.

We're investigating the issue and will update this page when a fix is available. Switch your alias to an Outlook.com or Hotmail.com account. After installing the September Public Update, Outlook 2007 displays mixed languages in the user interface.

Understanding the root causes and using the right tools can make all the difference. While built-in tools like ScanPST offer a basic Safety net, they often fall short when it comes to rectifying deeper file damage. Outlook slows down, crashes randomly, or fails to load Outlook not opening on Windows 10 entirely. Users often turn to Microsoft’s ScanPST tool, but it struggles with large files and doesn’t always finish the job. Microsoft Outlook is one of the most widely used email clients globally, especially in professional and business environments. Outlook also comes with strong built-in security features, making it a reliable choice for managing communication and workflow.

Start Outlook in safe mode to fix "Processing" screenIn Windows 10, choose Start, type Outlook.exe /safe, and press Enter.In Windows 7, choose Start, and in the Search programs and files box, type Outlook /safe, and then press Enter.In Windows 8, on the Apps menu, choose Run, type Outlook /safe, and then choose OK.

Start Outlook in safe mode to fix "Processing" screenIn Windows 10, choose Start, type Outlook.exe /safe, and press Enter.In Windows 7, choose Start, and in the Search programs and files box, type Outlook /safe, and then press Enter.In Windows 8, on the Apps menu, choose Run, type Outlook /safe, and then choose OK.

If you are using Outlook on a PC, you can check to see what is currently permitted by your computer or try to reset the Credential Manager and remove any old passwords. The Credential Manager is where Windows stores passwords and login information on your computer. It acts as a vault with specific settings and permissions you can adjust. It could be as simple as an out-of-date version of Outlook's software. Once an update has been run on your system, the bug may be rectified.

Due to the large number of affected users, the automated fix took time Outlook not opening on Windows 10 to apply. Microsoft advised using a manual workaround to restore access more quickly. A notification will be sent once the incident is fully resolved. We can diagnose and fix several common Outlook connectivity issues for you. If our automated tool can't fix your issue, or you'd like to fix it yourself, see the next section. Sometimes, antivirus real-time scanning can slow Outlook down.

Check the status bar at the bottom of the screen to see if another process is running. If so, wait a short time (usually two or three minutes) to see if Outlook starts working again. You might Outlook not opening on Windows 10 need to set Windows Update to automatically download and install recommended updates.

We hope this guide proves useful in resolving your Outlook problems efficiently. Microsoft Outlook is one of the most widely used email clients globally, especially in professional and business environments. Outlook also comes with strong built-in security features, making it a reliable choice for managing communication and workflow. Outlook forwards meeting invitations to other attendees without anyone actually sending an update or forwarding an invite. This happens to accounts that are configured in the iOS Mail app. To access the calendar shared with your Microsoft 365 for business account, you'll need to accept the invitation from Outlook on the web, iOS, or Android.