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.
Occasionally, classic Outlook tries to run a process in the background. Auto-archive, sending and receiving a very large attachment, or running some of the other mailbox tools can all be done in the background. Check the status bar at the bottom of the screen to see if another process is running.
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.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. To access the tool, open Control Panel and select "Uninstall a Program." You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally.
In addition to smart repair and troubleshooting Outlook startup issues recovery, the tool allows users to save mailbox items to various destinations like Exchange, Office 365, Gmail, etc. If none of the above methods fixes the ‘Outlook not responding’ problem, then there are chances that the Outlook PST in your Outlook profile is corrupt. In such scenarios, you need to repair the corrupt PST files. Check if the Outlook Will Not Open in Windows 10 error is now gone, by launching Outlook 2016. After you delete the Outlook App Data folder, we suggest you restart your system first and then, open Outlook. When the resetnavpane command is executed, what it does is it resets and removes all the customizations related to the navigation pane.
Before proceeding to the steps below, consider backing up your Outlook data file. The Inbox Repair tool should also create backups before you begin the repair process. Whether you backed up the data file manually or with the Inbox Repair tool, we recommend remembering the backup location. 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.
Or, if the error lasted in Safe mode also, moving to the next solution is a better option. Before trying any fixes for the mentioned Outlook error, try one of the quickest hacks. If not, move ahead to other solutions to troubleshoot Outlook error Something is wrong with your data files. Users now should be mindful of the common causes why users need to fix Outlook data files (PST).
Upgrade to Microsoft Edge to troubleshooting Outlook startup issues take advantage of the latest features, security updates, and technical support. There are multiple ways for you to send and receive email, and multiple versions of Outlook available. If the images in these topics don't match what you see on your screen, you might be using a different version of Outlook. Occasionally, classic Outlook tries to run a process in the background.
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. If you've successfully sent and received email from classic Outlook before, and now Outlook repeatedly asks you to reenter your password, one of two things may have happened. If you're trying to set up an iCloud account, follow the troubleshooting Outlook startup issues steps in Add or manage an iCloud email account in Outlook. For Gmail accounts, see Add a Gmail account to Outlook. This option could be useful if you constantly have to wait for Outlook to rebuild its data file when you restart.
Use the Microsoft 365 shared computer activation (SCA) troubleshooter to enable shared computer activation for Microsoft 365 applications. Use the uninstall troubleshooter to uninstall Microsoft 365, Office 2021, Office 2019, or Office 2016 from your Windows PC. If you have Outlook in your startup folder, remove the shortcut from the startup folder. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. TrustedTech delivers unbeatable customer service, with experts in licensing and high-level technicians always on-call to answer your tech issues in-depth. Our Account Managers and Distribution Team fulfills orders quickly and efficiently, giving our customers digital downloads in record time so they can move on to their next big project.
If classic Outlook still can't find settings for your email account, or you receive an error during setup, in many cases, you can set up your account manually. If you are unable to connect or are prompted for your password repeatedly attempt the following options. After finishing one step, if it does not resolve the issue move on to the next. The maximum number of recipients for an individual email through USNH IT mail servers is 300. This library of articles provides guidance to troubleshoot and fix errors that you may experience when using Classic Outlook for Windows.