Outlook Won’t Open On Windows 10 And Mac

How To
How To

Outlook users may encounter errors such as Outlook Won’t Open Cannot start Microsoft Outlook, or Cannot launch the Outlook Window. When you’re waiting for an important email, Outlook Won’t Open for a variety of reasons, including:

1. Outlook software that is no longer supported.
2. The profile needs to be fixed.
3. The window is shattered.

How To
How To

How to Resolve Outlook Not Opening Issues on Windows 10 and Mac

If you’re having trouble with Outlook not opening, don’t panic; I’ll show you all of the viable and effective solutions for getting Outlook to open.

Method 1: Remove VPN software

VPN (Virtual Private Network) is an acronym for Virtual Private Network. VPN provided you with features that allowed you to surf and download content from the internet anonymously. People use VPNs because they require network security and privacy. If your PC has a VPN installed, make sure to uninstall or disable it because a VPN operating in the background is one of the reasons Outlook Won’t Open.

Method 2: Use the Microsoft Support and Recovery Assistant

The Microsoft Support and Recovery Assistant programme can be used to fix the Outlook Won’t Open problem. This tool is used to resolve a common issue. As a result, running the Microsoft support and recovery assistant is a simple and effective way to resolve the issue.

Method 3: Start Outlook in Safe Mode with Add-ins Disabled.

By following the instructions below, you can fix the Outlook Won’t Open error by starting Outlook in safe mode and disabling add-ins:

Step 1: Hold down the Windows + R keys together until the run shows in the bottom left corner of the screen.

Step 2: In the dialogue box, type Outlook/safe, hit enter, and then click OK.

Step 3: Open the profile box, click OK, and then enter the password. After that, click Apply, and then enter the password.

Add-ons should be disabled.

Before you launch Outlook in safe mode, make sure all add-ins are disabled.

To do so, follow the instructions below:

Step 1: In Outlook, go to File, then Add-ins, and then select an option.

Step 2: Next, look at the add-ins (view and manage option), and see if the Manage box displays COM Ads-ins.

Step 3: Make sure to disable all enabled Add-ins as well as the selected Add-ins before clicking the OK button.

Step 4: Exit Outlook.

Add-ons should be enabled.

After you’ve disabled add-ins, restart Outlook and re-enable them to resolve the problem:

Step 1: Hold down the Windows + R keys simultaneously until the run shows in the bottom left corner of the screen.

Step 2: In Outlook, go to File, then select an option in the Add-ins section to enable it.

Step 3: Restart Outlook for the final time.

Step 4: Restart the computer and enable the add-ins again, being sure to continue the process until the error is resolved.

It’s a time-consuming process, but it’s useful, and most users agree that this way will cure Outlook.

Method 4: Create A New Profile

One of the reasons for the Outlook not opening error popup is a corrupted profile, which can be caused by viruses or a corrupted Windows. Here are some of the procedures to fix the Outlook problem by just creating a new profile:

Step 1: Press the window button until a two-column menu displays, then select Control Panel.

Step 2: Select the mail option from the control panel.

Step 3: In the mail menu, select profile and alter the profile photo by simply uploading an image.

Step 4: Complete the profile’s required fields, such as name, profile photo, and email address, and then click the next button to proceed.

Step 5: Double-check that all of the settings are set to manual.

Step 6: Once you’ve clicked the Finish button, your profile will be ready to use.

Step 7: Next, open the mail dialogue box. After that, select Prompt for a profile and then the OK button.

I hope the above procedure fixed Outlook, and after Outlook is fixed, you can retrieve the old profile as well.

Method 5: Repair your Outlook Data File

The data file contains all of the Outlook data. Data files might get corrupted at any time. To repair your Outlook data file, follow the instructions below:

Step 1: Exit Outlook and navigate to the Office installation folder.

Step 2: Open a command prompt and type SCANPST.EXE. Then press the Enter key.

Step 3: Then, using the browse option, look for an Outlook data file.

Step 4: Select the scan option to begin scanning the file. It resulted in the file being repaired.


Use Microsoft Exchange as an alternative because it offers the ability to delete your data file; to do so, follow these instructions.

Step 1: Select mail from the two-column menu that displays when you press the window button.

Step 2: In the Mail window, choose an email account.

Step 3: Select the open file location from the data files tab.

Step 4: A new window explorer window will open; ensure sure all other windows are closed before locating and deleting the data file.

Make a point of reopening Microsoft Outlook. Because the alternate approach comes from Microsoft, the company that makes Outlook, it is more efficient than the other method.

Method 6: Outlook Shouldn’t Be in Compatibility Mode

In Windows 10, compatibility mode is utilised to execute the applications. When the software fails to run in the display, it is forced to execute. To do so, follow these steps:

Step 1: Locate Outlook.exe’s destination folder.

Step 2: Right-click on the Outlook.exe folder, then select Properties, then Compatibility Mode.

Step 3: Make sure all of the compatibility mode options are unchecked before clicking the apply button.

Step 4: To see the changes, make sure to restart Outlook.

Method 7: Change the DPI setting

The majority of users claim that the Outlook problem may be resolved by simply increasing the DPI scaling to 100%. To do so, follow these steps:

Step 1: Select the display settings by right-clicking anywhere on the desktop.

Step 2: When the Display Settings window appears, just slide the DPI scaling to 100 percent with your mouse.

Step 3: To observe the changes, simply restart your computer after completing both procedures.

To address the Outlook not opening problem, just change the DPI to 100% using the procedures above.

Method 8: Using the New Email Message Option

Make sure Outlook is entirely shut down. To ensure that the following procedures are followed, we recommend selecting the Task Manager option to launch the Task Manager option:

Step 1: On your keyboard, press Ctrl + Alt + Delete at the same time.

Step 2: When the menu appears, click the search bar and put task manager into it.

Step 3: Select the option to launch the task management.

Step 4: Launch the Task Manager application.

Step 5: Close Microsoft Outlook by right-clicking on the programme.

There is also another option. If the preceding methods fail to produce results, you can use the new email option to send this message. The following are some of the steps.

Step 1: Right-click on the Outlook icon at the top of the menu and select Properties.

Step 2: Select the new email message, or the new meeting option in some windows; both are the same thing.

Step 3: When a new window appears, right-click the administrator option.

Outlook will open after you complete the instructions above. If it doesn’t, try the next technique, which is listed below.

Method 9: Use a Different Outlook Password

The following are some measures to do in order to fix Microsoft Outlook:

Step 1: You’ll need a Gmail account to which you’ve linked Outlook.

Step 2: Simply generate a 16-digit app password and remember it; you must remember it because it grants you access to Microsoft Outlook.

If the problem still persists, make sure you delete the Gmail account that is linked to Microsoft Outlook.

There is a second alternative way as well, which provides Outlook with more protection, and the error can occasionally be resolved by following the procedures outlined below –

Step 1: Right-click on Outlook and select Properties.

Step 2: A menu appears, allowing you to navigate to the File tab.

Step 3: Next, select Account Settings.

Step 4: Create a password for your Outlook account.

Method 10: Try Closing Outlook in This Manner

I realise you’re startled by this method and think it’s nonsense that changing the way you close Outlook fixes the problem. According to the survey, the majority of users just closed Microsoft Outlook by pressing the “Close” button.

Some of them used to close Outlook by simply clicking the power button, which is the worst choice, believe me. Directly pushing the power button is one of the reasons for the window’s corruption.

Choosing the File option in Microsoft Outlook and then clicking the Exit button is the recommended method for closing Outlook. This strategy decreased the likelihood of an error appearing in Microsoft Outlook.

Method 11: Using Outlook to Send a File

Sending the file via Outlook is said to repair the Outlook error by the majority of users, so I’ll show you how to send the file via Outlook to fix the Outlook error.

Step 1: Open Microsoft Outlook

Step 2: Compose a message

Step 3: Finally, select the Mime cast tab.

Step 4: Select the file you want to attach if you wish to attach it.

Step 5: Finally, but certainly not least, press the send button.

Here’s how to send any file with Outlook in a different way.

Step 1: Open the File Explorer

Step 2: Choose the file you’d like to transmit.

Step 3: Right-click on the file and select Send to a Mail Recipient from the context menu.

You can send any file using Outlook by using any of the techniques.

Method 12: Delete the Outlook AppData Folder

The Outlook Won’t Openbug was resolved by deleting the Outlook data folder, which sounds straightforward. Here, I’ll walk you through some of the procedures that lead to the deletion of the Outlook data folder and the subsequent repair of the Outlook data folder. Because this procedure necessitates the shutdown of the Outlook data folder, ensure sure to erase the Outlook data folder before proceeding.

Step 1: On your keyboard, press the Windows + R keys together; the run appears in the bottom left corner of the screen.

Step 2: In the dialogue box, type percent localappdata% and hit enter.

Step 3: Go to the Microsoft folder and look for it.

Step 4: Finally, look for the Outlook folder and delete it.

You can also try deleting the Outlook.xml file as an alternative.

Step 1: On your keyboard, press the Windows + R keys together; the run appears in the bottom left corner of the screen.

Step 2: In the dialogue box, type percent localappdata% and hit enter.

Step 3: Go to the Microsoft folder and look for it.

Step 4: Find and delete the Outlook.xml file.

You can use one of the two techniques to resolve the Outlook Won’t Open problem.

Method 13: Permissions to Access PST File

The PST file contains all of the information for Microsoft Outlook. You require authorization to access the PST file; if you use an improper way, you may get an issue that causes Outlook to not open; fortunately, we have a few procedures to fix the Outlook Won’t Open error.

Step 1: Locate the PST folder in the first step.

Step 2: Right-click on the PST folder and select Properties.

Step 3: From the menu, select Properties.

Step 4: Go to the security area and see if the username you’re looking for is available. Edit the username column if the username isn’t shown.

Step 5: Simply click the Add button to enter the user name.

Step 6: Fill up the username field with your real name.

Step 7: Select the OK option.

Step 8: From the list of user names, choose a username.

Step 9: To save changes, click the Apply button and then the OK button.

It is recommended that you restart your computer, and I am hopeful that there will be no errors after that.

Method 14: SFC /Scannow Command Prompt

The SFC /Scannow command scans all system files and replaces the corrupt file with a cached copy of the original. Follow the procedures below to resolve the failed to play test tone issue:

Step 1: On your keyboard, press the Windows + X buttons together. The main menu is displayed.

Step 2: On the keyboard, press the Windows key. When the bottom right search option displays, type “cmd” in the search box and press Enter.

Step 3: Right-click on “cmd” in the search box and select “run as administrator.” An Elevated Command Prompt will appear.

Step 4: When the elevated command prompt appears on the screen, type SFC/Scannow and click Enter. As seen in the diagram below

Step 5: Run a scan in “cmd” and wait for it to complete. It will then reboot your device automatically.

This solution is used by more than 60% of users to fix the Outlook Won’t Open problem.

Method 15: Reset the Navigation

On Windows 10, this strategy works better; here are some steps to fix Outlook.

Step 1: To achieve the greatest outcome, you must dismiss the full tab.

Step 2: Press Windows + R at the same time, and the Run box will appear on the screen. In the dialogue box, type Outlook.exe /resetnavpane and hit Enter.

The command will run, and the result will be the elimination of all customizations connected to navigation, with the expectation that Outlook will be fixed as a result of this procedure. If not, try an alternative approach.

Method 16: Delete the Registry Key

The Outlook Not Opening error can be resolved by deleting the registry key. Some of us don’t complete all of the steps. You can back up your registration key in that scenario. Follow the procedures following to delete the registry key:

Step 1: Press the Windows + R keys on your keyboard together until the Run box appears in the bottom left corner of the screen.

Step 2: In the dialogue box, type Regedit and hit enter.

Step 3: Look for HKEY CURRENT USERSoftwareMicrosoftWindows NTCurrentVersionWindows Messaging Subsystem in the registry. It can be expanded by clicking on it.

Step 4: Next, select the profile key, right-click on it, and select the Delete option.

Step 5: After completing all four steps, restart your computer.

Method 17: Log out of your iCloud account

Apple invented iCloud, which is a cloud storage service that is available across the whole Apple platform. I’ll show you some of the actions that Apple has suggested:

Step 1: Go to the settings on your Mac.

Step 2: Scroll to the bottom of the page to find the logout option.

Step 3: Once you’ve found the logout option, click it.

Step 4: Next, you’ll be prompted to enter your Apple ID and password, which is a required option with Apple devices due to their high degree of security.

Step 5: Select the logout option once more.

You can successfully logout of your iCloud account in Apple by following these instructions.


I’ve listed all of the workable, feasible, and realistic methods that anyone might use to get started. I’m hoping that one of the methods listed above will be able to resolve the Outlook Won’t Open error. If not, don’t panic; there are a plethora of other options.


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