Top 8 Ways to Fix Out­look Not Open­ing on Win­dows 11

Pankil Shah

Outlook is one of the most preferred email clients for Windows users. However, just like any other app or service, it's not without flaws. One of which is when the Outlook app refuses to open on Windows 11.

Top Ways to Fix Outlook Not Opening on Windows 11

In this post, we’ve compiled a list of solutions that should get the Outlook app running in no time. So, let’s check it out.

1. Open Outlook in Safe Mode

If you have been using add-ins on Outlook to enhance its functionality, one of them might be preventing Outlook from opening usually. To verify that, you can try launching Outlook in Safe Mode.

To start Outlook in Safe Mode, press and hold the CTRL key and double-click the Outlook shortcut.

Windows will show a prompt asking if want to start Outlook in safe mode. Click on Yes to confirm.

Open Outlook in Safe Mode

If Outlook is working fine in the Safe Mode, you’ll need to disable all the add-ins and restart the app again. Here’s how.

Step 1: Click on the File menu at the top.

Outlook App

Step 2: Use the left pane to navigate to Options.

Outlook Options

Step 3: In the Outlook Options window, switch to the Add-ins tab. Use the drop-down menu next to Manage and select COM Add-ins. Then click on the Go button next to it.

Outlook Add In

Step 4: Uncheck the boxes to disable add-ins and click on OK.

Disable Outlook Add Ins

2. Repair Microsoft Office

If you’re failing to open Outlook even in the Safe Mode, then you can turn to the Microsoft Office repair tool for help.

Step 1: Press Windows key + R to launch the Run dialog box, type appwiz.cpl and press Enter.

Run Dialog Box

Step 2: In the Programs & Features window, locate the locate Microsoft Office Suite or Microsoft 365. Right-click on it and select Change.

Microsoft Outlook Repair

Step 3: Select Online Repair or Repair and click on the Repair button to continue.

MS Outlook Repair

After completing the repair, see if you can open Outlook.

3. Disable Compatibility Mode

Compatibility mode on Windows is designed to help you run older programs and software on Windows 11. But since Outlook is fully optimized for Windows 11, running it in compatibility mode can lead to issues such as this one. Here's how to disable it.

Select the Outlook shortcut and press Alt + Enter to open Properties. Switch to the Compatibility tab and uncheck the 'Run this program in compatibility mode for' option. Click on Apply followed by OK.

Disable Compatibility Mode in Outlook

4. Reset Navigational Pane

Sometimes, issues with the navigation pane can also prevent the Outlook app from starting correctly. If that's the case, then resetting the navigation pane can help.

To reset the navigation pane in Outlook, press Windows key + R to the Run dialog box. Type the following command and press Enter.

outlook.exe /resetnavpane
Reset Navigation Pane

5. Update Outlook

Typically, Microsoft Office apps are updated automatically. If the update didn’t go through, then you can manually update the Outlook app in Safe Mode.

Step 1: Press and hold the Ctrl key and double-click on the Outlook shortcut to open it in Safe Mode. Go to the File menu.

Outlook App

Step 2: Switch to the Office Account tab. Expand Update Options and click on Update Now.

Update Outlook

If you can’t start Outlook in Safe Mode, you can try uninstalling and reinstalling the Outlook app instead.

To uninstall Microsoft Outlook, open the Start menu, type in Outlook. Right-click on the first search result and select Uninstall option.

Uninstall Outlook

6. Run SFC Scan

Another reason why you might have trouble opening apps and programs on Windows 11 is if the system files on your PC are corrupted. Thankfully, you can repair those system files by running an SFC. Here’s how.

Step 1: Right-click on the Start menu icon and select Windows Terminal (admin) from the resulting menu.

Open Windows Terminal Admin

Step 2: Type in the command given below and press Enter.

sfc /scannow
Run SFC Scan

7. Delete Outlook App Data folder

If the issue persists, the Outlook app data might be corrupt. To resolve that, you can try removing Outlook’s app data folder from your PC and open Outlook again. Here’s how.

Step 1: Press Windows Key + R to launch the Run dialog box, type %localappdata%, and press Enter.

Local Data Folder Windows 11

Step 2: Open the Microsoft folder and look for Outlook Folder.

Step 3: Select the Outlook folder and click on the trash icon at the top to delete it.

Delete Outlook App Data

8. Create a New Outlook account

The Outlook profile on your PC contains your Outlook settings. If Windows is having trouble accessing that profile, you can create a new profile and use it to start Outlook.

Step 1: Click on the Search icon from the Taskbar, type control panel and press Enter.

Open Control Panel

Step 2: Switch the View type to icons and click on Mail (Microsoft Outlook).

Mail Settings

Step 3: Under Profiles, select Show Profiles.

Show Profile

Step 4: Click on the Add button, enter the name for new profile, and click on OK.

Create New Profile for Outlook

Step 5: In the Add Account window, enter your account details and hit Next.

Add Account to Profile

Step 6: Once the profile is created, select your new profile under 'When starting Microsoft Outlook' and hit Apply.

Select New Profile for Outlook

Check if you can open Outlook.

Open Outlook With Ease

Your Outlook troubles shouldn’t keep you from your important emails. The above solutions should help bring the Outlook app back to its glory. Let us know which solution worked out for you in the comments below.


The above article may contain affiliate links which help support Guiding Tech. However, it does not affect our editorial integrity. The content remains unbiased and authentic.

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Pankil Shah

Written By

Pankil Shah

Pankil is a Civil Engineer by profession who started his journey as a writer at EOTO.tech. He recently joined Guiding Tech as a freelance writer to cover how-tos, explainers, buying guides, tips and tricks for Android, iOS, Windows, and Web.