You can view more than one calendar at a time, add other calendars, choose which calendar to display, and create new calendars. Currently, you can't use Outlook on Windows to edit calendars that are shared with your Outlook.com account, even if you've reconnected your Outlook.com account to Outlook. We're working to make it possible to edit shared calendars in Outlook 2016 for Windows. We have recently received some reports of users who are experiencing issues with subscribing to .ics/ical calendars. This fix will also lead to a reduction in the total number of contacts on your contact list. We will ensure that all information is retained and only contacts with matching information in all fields will be cleaned up.

This slows down productivity and quite frankly is just a total nuisance. In typical Microsoft fashion, there are also additional rules for certain older platforms that will make you feel very confused about 2FA. We'd be remiss to not tell you there are certain accounts (like Xbox 360) that always require 2FA as well as a special app password. The Authenticator app is designed to help you quickly and safely confirm your identity. With the app, an online intruder would be stuck on the first step of verification, because the Authenticator app is awaiting a one-time passcode, your fingerprint, another password, etc.

Your Outlook profile holds all your account settings and data configurations. If this profile becomes corrupted, it might fail to load or cause Outlook to crash upon opening. Such corruption could result from improper shutdowns, software conflicts, or corrupted files within the profile. You’ve probably already tried to start Outlook a few times, checked your internet connection, and restarted your device. But Microsoft’s email client still won’t open, leaving you cut off from your important messages, schedule, and contacts. Microsoft regulatory releases new updates for Outlook and Windows (or macOS).

When PST files are beyond the repair scope of the Inbox Repair Tool (ScanPST.exe), third-party PST recovery tools can be a lifesaver. These programs are specifically designed to handle more complex data corruptions. They use advanced scanning and recovery algorithms to parse severely damaged files, reconstruct them, and recover their contents. Restarting your device clears temporary files and can fix minor software conflicts. If the above solutions are not working up to the mark, it simply indicates the corruption in your Outlook PST files.

If you are having issues sending email, this might be due to validation issues with troubleshooting Outlook startup issues your Microsoft Account. We are aware that some users may not be able to receive email from Gmail accounts. We're aware of an issue where some users see the error message "Your message can't be displayed right now". If you're having problems sending or receiving email, read how to Fix Outlook.com email sync issues.

We can fix the problem for you, or you can use the troubleshooting steps we're providing below to help resolve these startup issues. A corrupted profile, a damaged PST file, faulty add-ins, or improper Outlook startup settings often cause this issue. 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 Outlook worked correctly the last time and nothing has changed about your account configuration, then checking if things work correctly in Safe Mode is a good first step.

No action needs to be taken for the fix to be applied. To check if you have received the fix, review your contact list to confirm duplicates have been removed. To help you get rid of these duplicates, we have released a fix which will automatically clean up your contact list. This fix will clean up troubleshooting Outlook startup issues duplicate contacts for end users starting August 9, 2023. Rollout of the fix to all users will take few weeks, so, some users may see the fix applied by the end of September.

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally. 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. For a short intro about how to access and read the Event Viewer in Windows, see this Quick Tip. If these methods dose not work, you can also try a third party tool, Kernel for Outlook PST Repair tool. If anyone finds a more permanent solution, I would appreciate it.

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. Are you having trouble starting Outlook or receiving troubleshooting Outlook startup issues "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages?