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. Your Outlook profile holds all your account settings and data configurations.
To learn more about how to share feedback, see How do I give feedback on Microsoft Office. Note that you can quickly tell how your mail is currently sorted, by the presence of a small triangle on the field headers. Please install the Windows 10 Fall Creators Update to fix this https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ issue. Outlook 2016 freezes when you try to preview an Excel file that’s attached to an email.
We’re investigating the issues and will update this page when a fix is available. In the meantime, please use the workarounds suggested for each issue. To import contacts from other email services, export contacts, or clean up duplicate contacts, select an option from https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ the Manage contacts menu. You can view more than one calendar at a time, add other calendars, choose which calendar to display, and create new calendars. When you try to accept a shared Outlook.com calendar using your Microsoft 365 for business account in Outlook 2016, you might receive the “Something went wrong” error or your sign-in might fail. Some customers may not be able to see their Profile, Account or Sign Out options when selecting their picture on the top toolbar.
After finishing one step, if it does not resolve the issue move on to the next. Clear unnecessary files from outbox and trash folder to optimize the performance of your Outlook application. Also, try to use the necessary Outlook features to enhance the performance of Outlook as well as Windows. A disturbed internet connection can lead to errors like 0x800CCC0F, 0x a and 0x a.
Another options is to use the Filter Email button on the ribbon. See and manage the tasks in the selected list from this window. Right-click a task for a list of options, or select a task to see and manage its details. Under Calendars, My calendar is the default selection and displays the calendar in Month view.
In this article, you will see various Microsoft Outlook error messages and solutions to fix them effortlessly. Most Microsoft Outlook issues occur due to PST file corruption. So the important question is https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ how to fix Microsoft Outlook error in a simple and quick way without any data loss. You can also add the secondary connected accounts (Gmail, Yahoo, etc.) in Outlook.com as additional accounts in the Outlook profile.
Each message also has a mini toolbar when you open the message in a new window. For each message, you can delete it, mark https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ it as unread, flag the message, or pin it to keep it at the top of your folder. To show or hide the Folders list, select Show or Hide the navigation pane.
You can also select multiple contacts—for example, https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ to send an email to the selected contacts. Some customers may experience a delay when trying to create a new email address, or alias, for their Outlook.com account. Availability has recovered, and engineers are investigating the root cause and identifying problematic servers. The team is sweeping all remaining capacity to identify and address residual issues. This library of articles provides guidance to troubleshoot and fix errors that you may experience when using Classic Outlook for Windows.
Repairing is a simple process but may take as long as half an hour to complete. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. We love reading your suggestions on new features and feedback about how you use our products! To learn more about how to share your feedback, see How do I give feedback on Microsoft Office. Set up your account manually as an IMAP or POP account in Outlook. Visit Firefox support to learn how to Disable or remove Add-ons.
Add-ins are extensions that you can install to enhance Outlook’s functionality and unlock additional features, like CRM integration. But these add-ins can sometimes result in compatibility issues, especially if they’re not up-to-date or poorly coded. A conflicting add-in might cause Outlook to freeze, crash, or not open at all.
Starting Outlook in safe mode, which starts Outlook without add-ins loaded, can tell you if an add-in is the source of the problem. A well-running Outlook will ensure that you enjoy the full benefits of this popular email program. If you follow the above solutions, your Outlook will perform according to your expectations. If the in-box Program cannot fix the corrupted Outlook PST files, you can also try Wondershare Repairit for Email. It is a powerful and almighty software that can be applied to fix corrupt Outlook PST files in any scenarios.
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.