If you get the error "Cannot open the Outlook window" when trying to start Outlook, the error usually indicates that steps to fix Outlook not opening your Folder Pane or Navigation Pane settings holds a corruption. Just to make sure you are not trying to troubleshoot an issue which has already been solved, before you begin verify that you have installed all updates for your version of Outlook. Depending on the answers, you could possibly skip large portions of this guide or even directly get a solution to your startup issue. Most Outlook problems can be resolved with proper troubleshooting and maintenance. Following the fixes above will help you keep your Outlook running smoothly and protect your productivity.

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 all Outlook versions on Windows 7, Windows 8, Windows 10. A lot of times, a user will click on something by accident and change their view and be unsure of how to get it back. If anyone finds a more permanent solution, I would appreciate it. It seems like something went wrong on Microsoft update and they might recall it or fix it, so we might need to wait untill that.

A damaged or corrupted Outlook user profile is a common reason for "Outlook won’t open" errors. Creating a fresh profile can provide a clean slate for Outlook to start. 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.

Get Help has troubleshooters for classic Outlook for Windows you can run for many common scenarios, steps to fix Outlook not opening such as Outlook startup or profile setup problems. These often help resolve issues without the need to contact support. Get Help has troubleshooters for Microsoft 365 you can run for many common scenarios. If a troubleshooter is available for your issue, select Start to run that troubleshooter. Microsoft has its own tool for automatically scanning and correcting Office when things go awry. You can read about it and then run the Microsoft Support and Recovery Assistant to see if that helps.

If you can't choose any of the menu options, type inside an email message, calendar event, or contact, Outlook may have frozen. There are three steps you can take to try to get Outlook working again. We recommend setting Windows Update to automatically download and install recommended updates. Bug fixes, new features, and performance enhancements are released regularly. There are a number of possible reasons for Outlook to behave this way.

Some Safari users are unable to add steps to fix Outlook not opening email addresses in the To section, or cannot point the cursor in the To field. When users select the Manage Microsoft Storage quota link at the bottom corner in Outlook.com, they are taken to a blank Settings page. If you are having problems with Outlook, there are a few things we can help with to get you back to sending and receiving your email.

Sometimes you’ll open Outlook and then for no apparent reason, it will freeze or shut itself down. There are quite steps to fix Outlook not opening a few different causes for this, but one of the most common is a defective add-in. Here’s how to disable add-ins in Outlook even when it keeps crashing. 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.

You don't have permission steps to fix Outlook not opening to create an entry in this folder. Right-click the folder, and then click Properties to check your permissions for the folder. See the folder owner or your administrator to change your permissions.

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.

If you decide you don't want the calendar you created, right-click the calendar and select Remove. To show or hide the Folders list, select Show or Hide the navigation pane. Calendar events can be used for your own personal event, or you can invite others steps to fix Outlook not opening to create an in-person or Teams meeting. To change your Mail settings so your inbox looks and behaves the way you want it to, see Personalize your new Mail experience in Outlook.com. You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally. Post questions, follow discussions and share your knowledge in the Outlook.com Community.

This issue has been mitigated and we are continuing to monitor the issue to ensure stability. 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 steps to fix Outlook not opening new rule that corrected the wrong campaign verdict for all impacted customers during the incident. You might need to set Windows Update to automatically download and install recommended updates.