You can run the Inbox Repair Tool (scanpst.exe) to scan your Outlook data files and repair errors. Are you having trouble starting Outlook or receiving "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages? We can fix the problem for you, or you can use the troubleshooting steps we're providing below to help resolve these startup issues. If your Outlook is working fine now, it means add-ins are the culprit. But it is important to identify the specific add-in that was causing trouble. To identify that, check the add-ins one at a time and restart Outlook.

Here, we list fixes for the possible causes, starting with the most likely culprit. Go in order so you have best chance of getting back to your inbox as quickly as possible. Occasionally, classic Outlook tries to run a process in the background. Auto-archive, sending and receiving a very large attachment, or running some of the other mailbox tools can all be done in the background. 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.

If the self-help doesn't solve your problem, scroll down to Still need help? Switch your alias to an Outlook.com or Hotmail.com account. Customers using the contact support buttons at the foot of the support pages, or the "email us" links in support Virtual Agent, are unable to open the Help Pane. Check that you have not accidentally blocked the Gmail domain when blocking one Gmail user. Connect with experts, discuss the latest Outlook news and best practices, and read our blog.

After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, Outlook repair support team but we recommend moving to Windows 11.

In many scenarios, antiviruses become incompatible with other applications. The same applies to the situation whenever Outlook stuck on loading profile. While these Microsoft accounts work in other Microsoft products (e.g. OneDrive, Windows, Xbox), they are non-functional when visiting Outlook.com. Outlook.com (the web version of Outlook) and Outlook apps require a 1st party alias (Outlook/Hotmail/Live/MSN) to send and receive email, use calendar, etc. Occasionally, classic Outlook tries to run a process in the background. Auto-archive, sending and receiving a very large attachment, or running some of the other mailbox Outlook repair support team tools can all be done in the background.

If you have logged in to your @live.com email address in the last 12 months but don't remember the password, you can try the Microsoft Recovery Form. You cannot create a new email address with @live.com as the domain address. You cannot create a new email with @msn.com as the domain address. There's no shortage of Microsoft Outlook problems, but not all hope is lost. This article will cover how to fix Outlook issues that plague the everyday user in 2023.

These dialog boxes often don’t allow Outlook to respond properly, so check for any open dialog boxes on your system. By installing add-ins in Microsoft Outlook, you can combine the application with extra features or functionalities that were not available by default. The navigation pane is the leftmost pane in Outlook where you'll find your folder list and the icons to move between Mail, Calendar, People, and Tasks.

Both services offer robust features and are continually updated to enhance user experience and security. Outlook support for Mac refers to the resources and assistance Microsoft provides for users encountering problems with the Outlook application for macOS (Apple computers). Outlook webmail support is the assistance Microsoft provides for users who encounter problems using Outlook.com (formerly Hotmail) – the web-based version of Outlook accessed through a web browser. Outlook Inbox Support is designed to ensure users can manage their email communication effectively, leveraging Outlook’s features to enhance productivity and maintain organization within their inbox.

The root cause was the deployment of an incorrect campaign data file, which led to false positive campaign detection. We have since reverted to the right data file and the outbound email flow has returned to a normal state. We also released a new rule that corrected the wrong campaign verdict for all impacted customers during the incident. If you're having problems sending or receiving email, read how to Fix Outlook.com email sync issues. Maybe you've added a new program to your computer that doesn't get along with Outlook, or your system has a virus.

Having 10+ years of experience in different Outlook repair support team technologies including, Office Systems, Exchange Server, Mac Technology, and Open Source email server platform. You may have below versions and would like to know the solution for it. If you are seeing this error because of root certificate then follow these steps to install a new and trusted certificate.