Get Help has troubleshooters for steps to fix Outlook not opening classic Outlook for Windows you can run for many common scenarios, such as Outlook startup or profile setup problems. These often help resolve issues without the need to contact support. The issues documented in this section have been reported after installing the recent updates listed below. We're investigating the issues and will update this page when a fix is available.

Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities. To install the latest Windows and Office updates, click the link below. Please install the latest updates on your phone to resolve the issue. Outlook forwards meeting invitations to other attendees without anyone actually sending an update or forwarding an invite. This happens to accounts that are configured in the iOS Mail app. Until you can install the Windows Update fix release, you can set a registry key that will cause Outlook to stop using the local Windows Search service.

It is a powerful and almighty software that can be applied to fix corrupt Outlook PST files in any scenarios. If you restart it successfully, it will show you that one or more add-ins are defective. Sometimes, extra tools, ‘add-ins’ in Outlook, can make things tricky.

There are quite 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. You have successfully created a Distribution Group. The maximum number of distribution group members is 100,000 members, and the recipient rate limit is 10,000 recipients per day. Step 1 - The hard limit of recipients for a single email message is 300. Reduce the number of recipients for a single email to less than 300.

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.

Depending on the answers, you could possibly skip large portions of this guide or even directly get a solution to your startup issue. Either disable caching or reduce the cache from unlimited, 12 months or whatever it is, to 3-6 months, all other data, the user would have to click ‘access on server’ or some other similar verbiage. You might need to set Windows Update to automatically download and install recommended updates. Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities.

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. However, if you encountered other issues like Outlook not responding, learn how to fix Outlook not responding here. Click the above link to have a quick download, then you can have Outlook errors fixed within minutes. Check the solutions to fix "Outlook not opening" problem and how to avoid "Outlook won't open" again. Here are some common fixes that should work when Outlook doesn't open, whether you're using Windows or a Mac.

When typing, please note steps to fix Outlook not opening the space between outlook.exe and /resetnavpane.If you encounter this issue more often, see this Quick Tip to find a more definitive solution. When typing, please note the space between outlook.exe and /safe.For alternative methods of starting Outlook in Safe Mode see this Quick Tip. As @ode2joy ​ said, clearing out the user’s profile usually works, which is a more thorough procedure than just deleting .nst and .ost files. I have found that when this happens its due to the Account in windows needing to be updated. If you close outlook(make sure its not in the system tray) then click on start and type Domain, then find Access work or school. You should see the Microsoft account, click on it and disconnect it.

Check the status bar at the bottom of the screen to see if another process is running. If so, wait a short time (usually two or three minutes) to see if Outlook starts working again. Rohan Wiese is a Technical Content Writer at Aryson Technologies, specializing in databases, e-mail recovery, and e-mail migration solutions. Corrupted or badly set-up Outlook profiles can often cause start-up problems.

Not something you want to take on lightly, but sometimes you have to. Similar to our earlier suggestion of repairing Office (see #3 Repair Your Microsoft Office above), perform the same steps except choose to Uninstall. Be aware that you may need your product key if you received one. This option could be useful if you constantly have to wait for Outlook to rebuild its data file when you restart. No matter how well written add-ins are steps to fix Outlook not opening (and even Outlook itself), there will always be the occasional Outlook problem that doesn’t seem to go away or may not be related to add-ins at all.