To manage your mailbox by using the AutoArchive feature, see AutoArchive settings explained. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. It’s also crucial to ensure that the version of Outlook you’re using is compatible with your Windows operating system version. Follow this procedure to use the process of elimination to identify the problem in Windows 10, Windows 8, Windows 7, or Windows Vista. We recommend that you move several items in your larger folders to separate folders, or that you archive those items by using the AutoArchive feature. If Outlook is in use by another process, this information is displayed in the status bar at the bottom of the screen.

Are you having trouble starting Outlook or receiving "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages? We can fix the problem for you, or you can use the troubleshooting steps we're providing below to help resolve these startup issues. Since your app doesn’t open, you’ll have to use another Office app on your PC to trigger the update. This is because when you update one Office app, it automatically updates all other Office apps on your PC. When your cache files are deleted, launch Outlook, and the app should open without problems.

With great functionality, you can manage your email, contacts, calendar as you like. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. These troubleshooting techniques apply to Outlook 2016 and 2011 for Mac. Outlook Fix Blog Sometimes, when you’re using Outlook, it might ask for your confirmation before doing something. For example, if you try dismissing all reminders, Outlook might show a message asking, ‘Are you sure you want to do that?

Download the latest updates by visiting your antivirus software vendor's website. Are Outlook Fix Blog you having trouble starting Outlook or receiving "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages? We can fix the problem for you, or you can use the troubleshooting steps we're providing below to help resolve these startup issues.

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. Outlook caches various files to speed up your app experience. When you have issues with the app, it’s likely the app’s cached files are corrupted.

Once you’ve used this app, launch your Outlook app, and it should work as expected. For Outlook not opening problems, you can use Kernel Outlook PST Repair to fix the corrupt PST file and import it to restore mailbox items. This innovative Outlook PST recovery software repairs large PST files without compromising their integrity. It is is an advanced tool that gives you the ability to fix all major errors in your Outlook data files. Besides, it allows you to save the repaired PST file in multiple formats, like HTML, RTF, PST, etc, and even to the cloud, Microsoft 365 destination. If your Outlook version is outdated, that may be why you can’t open it.

Start Outlook in safe mode to fix "Processing" screenIn Windows 10, choose Start, type Outlook.exe /safe, and press Enter.In Windows 7, choose Start, and in the Search programs and files box, type Outlook /safe, and then press Enter.In Windows 8, on the Apps menu, choose Run, type Outlook /safe, and then choose OK.

When you install Outlook, an Inbox repair tool (scanpst.exe) is also installed on your PC. The Inbox repair tool can resolve problems by scanning your Outlook data files, and repairing errors. To use the Inbox repair tool, exit Outlook, and then follow the steps in Repair Outlook Data Files (.pst and .ost). As your mailbox size increases, more resources are required to open each folder. If you have a large number of items in any single folder, you may experience performance issues during certain operations.

If you’re still having problems, you can try resetting your Windows Firewall settings back to default. Once the add-ins are disabled, close Outlook 2016 and restart the application normally to check whether it now opens as normal or not. You can determine if it's corrupted by creating a new profile and changing which profile is used when Outlook starts.

If the problem doesn't occur after you restart Outlook, one of the add-ins is likely the cause of the problem. Restore the add-ins one at a time until the problem does occur to determine which add-in is causing the problem. Make sure that the latest updates for Outlook are installed. For more information, see How to install the latest applicable updates Outlook Fix Blog for Microsoft Outlook (US English only). Many of these items can be automatically checked by the Classic Outlook Advanced Diagnostics troubleshooter.

In the Folder Pane, you might see a folder named Recovered Personal Folders that contains your default Outlook folders or a Lost and Found folder. Although the repair process might recreate some of the folders, they may be empty. The Lost and Found folder contains any folders and items Outlook Fix Blog recovered by the repair tool that Outlook can't place in their original structure. We've streamlined search to make it easier than ever to find what you're looking for. The new Outlook Attachment Preview feature lets you see your pictures and files without leaving your inbox.