Over time several add-ins would have been installed into your Outlook user profile. Each of these add-ins needs to be loaded into memory before starting Outlook. Add-ins that are no longer used still load, contributing to the slower startup of Outlook. Disabling the non-essential add-ins should see an improvement in start times as well as stability. Corrupted files may not only impact performance but also trigger errors such as 0x f, which typically means Outlook can’t access its data file or address book. Creating a new profile or repairing the data file often helps resolve it.

When you have a weak or unstable internet connection, it can cause the app to load slowly, especially on mobile devices. If you’re using an outdated version of Outlook, it can result in slower performance due to a lack of necessary updates and improvements. If a specific version significantly impacts performance, such as CPU you could navigate to the "High CPU usage" diagnostics dashboard and look for the Outlook binary. Some of these data-gathering remote actions are used to populate the live dashboard and should already be scheduled. You can query the results by investigating KPIs from the Live dashboard or from your own investigations. Restart Outlook and check the performance of the Outlook application.

Outlook support for Windows is the technical support and resources provided by Microsoft for users of the Outlook application on troubleshooting Outlook startup issues Windows operating systems. Outlook, part of the Microsoft Office suite, is a personal information manager that includes email, calendar, contacts, and task management features. Support for Outlook on Windows encompasses a wide range of services designed to help users navigate and utilize the application effectively, troubleshoot problems, and enhance their productivity.

If you can send email while Outlook is in safe mode, creating a new Outlook email profile should allow you to send email again. Should you decide to remove a profile, back up the data files first. All offline cached content will be deleted when you choose Remove. For more information, see Introduction to Outlook Data Files (.pst and .ost).

If the problem doesn't occur after you restart Outlook, one of the add-ins is likely the cause of the problem. Restore the add-ins one at a time until the problem does occur to determine which add-in is causing the problem. Although add-ins can enhance your user experience, they can occasionally interfere or conflict with Outlook. Try to start Outlook without any add-ins running.

In the dashboard's summary tab, you can access a helicopter view of where you might have problematic areas. Based on this information, you can navigate to the respective tab to troubleshoot in more details. I have to remind folks of that quite often troubleshooting Outlook startup issues when they cook guaranteed email response times into contracts. Another potential alternative is to use a light-weight search product. For example, there used to be an Outlook search product called Lookout.

A status message appears at the bottom of the message list while Outlook is syncing. For more information, please go to Sync to manually check for new mail and to send messages in Outlook. Outlook stores all your email messages, meetings and events, contacts, and tasks in data files. 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.

The error message contains the error code and its short description. Most users tend to ignore these error codes,but they actually provide valuable information about the root cause of the problem. Outlook has a location where you can manually add approved email addresses to the troubleshooting Outlook startup issues Safe Senders list and ensure they never end up in your junk mail.

When you install Outlook, an Inbox repair tool (scanpst.exe) is also installed on your PC. The Inbox repair tool can resolve problems by scanning your Outlook data files, and repairing errors. To use the Inbox repair tool, exit Outlook, and then follow the steps in Repair Outlook Data Files (.pst and .ost). In the first place, check whether your antivirus is up-to-date. If the above does not help, turn off the antivirus and troubleshooting Outlook startup issues see if it brings Outlook back to life.

You can even add your @outlook.com email address to Mailbird and not miss out on any of your important conversations. See why Mailbird is trusted by thousands of Outlook users. All these give you a straight indication that there is a problem with your PST file. Without paying attention to the problem, the entire data can be lost.

Read how to Add your Outlook.com account to another mail app. Some customers may experience a delay when trying to create a new email address, or alias, for their Outlook.com account. We have recently received some reports of users who are experiencing issues with subscribing to .ics/ical calendars. We're aware of an issue where some users see the error message "Your message can't be displayed right now". Microsoft has released a Windows Hotfix file to remove the contacts folder synced by the Teams app. Add an Outlook.com alias to your account and send email to Gmail users using that alias.