Fix: "Cannot Start Outlook" Unable to Open Outlook Window Error

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 "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. 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. To do this, start up the Windows Task Manager either by pressing Ctrl + Alt + Del, or by right clicking the taskbar and choosing "Start Task Manager". Then switch to the Processes tab and find all OUTLOOK.EXE items in the list. Click on each OUTLOOK.EXE to select it and hit the "End Process" button. Return URL If your user profile or folder is stored on a network drive, Outlook will be slower to respond and might become a hanging outlook problem. If the check box is cleared, the service or startup program doesn't run when you restart the computer. To keep up with new viruses as they're created, antivirus software vendors periodically provide updates that you can download from the Internet. Download Return URL the latest updates by visiting your antivirus software vendor's website. You can follow the tips listed below to repair Outlook data file errors. If you have email messages in an email program, you must import your email messages Return URL and addresses to the new user profile before you delete the old profile. If everything is working correctly, you can now delete the old profile. Your user profile is a collection of settings that let you customize the computer appearance and performance. It contains settings for desktop backgrounds, screen savers, sound settings, and other features. User profiles help make sure that your personal preferences are used when you log on to Windows. If that doesn’t work, try Return URL using the Inbox Repair Tool or creating a new profile. And if nothing else helps, there are great tools out there that can recover everything for you. Take it one step at a time, and you’ll have Outlook working again soon. Thus, look ahead to the methods explaining how you can quickly repair Outlook Mac. You can check the location of your Outlook Data Files in Outlook. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Find solutions to common problems or get help from a support agent. Read how to Add your Outlook.com account to another mail app. 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. Running the /resetnavpane command removes all customizations to the navigation pane. 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. Use the classic Outlook startup troubleshooter to diagnose and fix several common classic Outlook for Windows issues for you. You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally. When reaching Return URL this point of the guide, the issue most likely also occurs for other users on the computer. This means that the issue is not caused by a configuration setting but by an installation error. 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. Starting Outlook in Safe Mode will prevent some or all add-ins from being loaded, prevents several settings files from being loaded and turns off the Reading Pane. Many users report common Outlook problems on Microsoft forums and support platforms. In this guide, we’ll walk you through practical, do-it-yourself solutions to troubleshoot and fix these issues so you can get back to work without delays. 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 Return URL when a fix is available. In the meantime, please use the workarounds suggested for each issue. It can be caused due to improper installation of a program, corruption in the hard drive or registry file, etc. This has nothing to do with the email client; rather, it specifies bugs on your hard drive. There are no straightforward solutions available to fix this issue, however you can try some common troubleshooting techniques to fix your local hard drives. Clearing the Outlook CacheExit Outlook and Skype for Business.From the Start menu, choose Run.In the Run window, type this path in the Open box "%LOCALAPPDATA%\Microsoft\Outlook\"Click OK.Find the .ost file and rename or delete it (you may need to Show Hidden Files and Show Extensions to see the file)More items...•4 days ago