There can be instances that your Outlook profile is corrupted, recreate a new Outlook profile to resolve the issue. Here are some of the reliable methods to restore Outlook 365 not working issue. Follow these methods step-by-step to overcome the issue. Opening Outlook in Outlook startup repair solutions safe mode means that the application will only open all the necessary files to start the applications.

For more information, please see Access to Microsoft 365 email and applications by audience. For information about Microsoft 365 storage quotas, please see Microsoft 365 storage quotas and information. The folder may have been deleted or the server where the folder is stored may be unavailable. You don't have appropriate permission to perform this operation. MAPI does not validate that a provider's DLL that it is requested to load is registered correctly in MapiSVC.inf or even that it comes from the local machine.

Trouble shooter came back as there was a problem running the trouble shooter, try looking for other solutions. When Outlook does open, it will send mail fine one minute and then the next minute it will not send any mail. I agree, it is highly unlikely that all the users would suddenly have an issue that isn’t patch related. Outlook opening problems are simple to deal with.

Take it one step at a time, and you’ll have Outlook working again soon. There are many methods to repair Microsoft Outlook 365, but none can deal with highly corrupted PST file. In such case, Kernel for Outlook PST Repair tool comes in handy.

If it’s an RDS server and the cache is also on the server, if the server crashes, reboots abruptly, is full, there are many reasons. Instead of removing the profile, remove the OST file and let it recreate. Compatibility mode is suitable for older software with Windows 10 that fail to run normally.

To sum up, we explored several methods to fix "Outlook won’t open" errors. Whether it’s a profile issue, a corrupted PST file, or faulty add-ins, the methods above can help you get Outlook running again. When Microsoft Outlook refuses to open, it’s incredibly frustrating. This issue often stems from common culprits like a corrupted user profile, a damaged data file (PST or OST), or even a minor conflict within its settings or add-ins.

The good news is that most "Outlook won’t open" errors can be resolved with a few proven troubleshooting steps. When you install Office, an Inbox Repair Tool (SCANSPST.EXE) is also installed on your PC. The Inbox Repair Tool can resolve issues by scanning your Outlook data files and repairing errors.

Pressing Alt+Tab will help you switch from window to window and help you see what dialog boxes might be stopping Outlook from Outlook startup repair solutions responding. These troubleshooting techniques apply to Outlook 2016 and 2011 for Mac. The navigation pane, which typically displays your Inbox, Sent Items, and other folders on the left sidebar, can sometimes become corrupted. A simple reset often resolves this and allows Outlook to open correctly. Sometimes, extra tools, ‘add-ins’ in Outlook, can make things tricky. They’re like helpful accessories, but sometimes they can cause trouble.

Start classic Outlook in safe modeIn Windows 10, click Start.Type Outlook /safe, in the Search programs and files and then click OK.Close and re-open Outlook.If the issue is resolved, you can keep working, or if you have time, take the following steps to find out what COM Add-in is causing the problem.

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. If the troubleshooter can't fix your issue, or if you'd like to fix it yourself, see the next section.

Thankfully, Microsoft Outlook is fully optimized for Windows 10, meaning Compatibility mode is not necessary. You might be wondering what happens when you switch on Outlook startup repair solutions the Compatibility mode for Outlook. When you do this, your Outlook might have opening problems. For this reason, you should always turn off Compatibility mode for Outlook.

Updating your Outlook may conveniently solve the issues you're experiencing. All you need to do is to check and install any updates for the app. Existing Hotmail accounts have been permitted Outlook startup repair solutions to keep their email addresses as well. You can still create a new email address with @hotmail.com as the domain name. If Microsoft Outlook is not working, we might be able to help you pinpoint why.

If Outlook is NOT able to start in safe mode, then try the next proposed solution below, entitled Create a new Outlook profile. Despite the various avenues mentioned, the problem is identified only on RDS 2016 Outlook startup repair solutions (5 servers) with Office 2016. Curiously, there are no issues with PCs running Windows 10 or 11 and Outlook 2016, all within the AD. I initially had a script to remove the entire Outlook folder if date created was before the date of implementation. I’ve modified this to remove the above autodiscover records on user login as a temp workaround.