As a ‘non-delivery’ email notification is not always sent, you may not step-by-step Outlook troubleshooting be aware that your important messages are not being delivered until you run a deliverability test. This will guide you in determining if the server is down or if there are other connection issues. 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. We have recently received some reports of users who are experiencing issues with subscribing to .ics/ical calendars. Email authentication was more of a recommendation than a requirement until recently.

Find solutions to common problems or get help from step-by-step Outlook troubleshooting a support agent. If Outlook is NOT able to start in safe mode, then try the next proposed solution below, entitled Create a new Outlook profile. Outlook may be running with settings meant for an older Windows version. For more detailed instruction on how to enable or disable add-ins see this Quick Tip.If you you get an error that you cannot disable the add-in see this Quick Tip instead. The "Cannot open the Outlook window" error can be fixed quite easily. If you share this computer with another user, you can ask this other user to logon and ask to verify if Outlook is still working for him or her.

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 step-by-step Outlook troubleshooting "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages?

If you're having problems setting up your email in classic Outlook, we want to help. Find solutions to common problems or get help from a support agent. If you can't open Outlook, or Outlook disappears or crashes, one of your add-ins may be to blame or you may need to update Outlook. You can give feedback by selecting Help from the top menu, then Feedback. If your mailbox is full, we won't be able to reply to your request.

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. We have multiple tools to help you automatically step-by-step Outlook troubleshooting diagnose an issue, troubleshoot, and fix problems with Outlook. If you can't open Outlook, or Outlook disappears or crashes, one of your add-ins may be to blame or you may need to update Outlook. 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.

Often there is the option to add sites to a whitelist, and you can give more permissions to Outlook. The easiest way to find out if this is the problem is to temporarily disable your antivirus software and log in to Outlook as usual. If the prompts go away, you'll know it was the antivirus software. There are a number of reasons this issue arises, which makes it even more infuriating. It could be an issue with a setting on the account, or it could be something external that is blocking normal functions in Outlook.

Last but not least, you can try to repair Outlook PST files using the ScanPST tool or using a specialized Outlook repair tool. If your Outlook data file is damaged, you’ll need this tool. It’s built into Outlook and helps repair PST and OST files. Also, you can recover permanently deleted items and attachments from Outlook with the help step-by-step Outlook troubleshooting of this Outlook repair tool.

We are aware that some users may not be able to receive email from Gmail accounts. Although it's not possible at the moment to turn the feature off entirely, you can choose to remove it from your favorites list by right clicking the folder and selecting Remove from step-by-step Outlook troubleshooting Favorites. This issue has been fixed for Outlook.com country domains.

However, if you want to change your password with your email provider, you'll need to visit their website or help desk, or contact your email administrator. For example, if you have a Yahoo! account, you first have to change your password at Yahoo.com. Once you've changed your password with your email provider, you can update the password in Outlook. See Change or update your email password for more information.

We will ensure that all information is retained and only contacts with matching information in all fields will be cleaned up. To check if you have received the fix, review your contact list to confirm duplicates have been removed. Add an Outlook.com alias to your account and send email to Gmail users using that alias.

The new version of the object is written to a newly allocated space, but the old version remains in the OST file as well. To access the calendar shared with your Microsoft 365 for business account, you'll need to accept the invitation from Outlook on the web, iOS, or Android. If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation from another Outlook application. The person who sent you the invitation will need to remove your permissions and then send a new invitation.