Outlook Mail Will Not Open in Windows 10? Enable it in 6 Ways

Find Outlook mail not open in Windows 10? Enable it in the below 6 proven ways and you can gain one email backup solution to enhance data security.


By Maggie Updated on December 22, 2023

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User case: Outlook will not open Windows 10

I have had this problem for 2 days on my lap top. Outlook 365 will not open in start uninstalled it last night and reinstalled it with advice off someone it was ok last night then back to not opening any advice please?

My Outlook Windows 7 on my PC is fine.

Facing the issue of Outlook mail will not opening in Windows 10 can be a frustrating experience. Some users may be curious and aks ‘why is my Outlook not opening Windows 10’ and how do I fix it? Common reasons for this problem include faulty Outlook Add-ins, a corrupt Outlook profile, an outdated Office program, outdated Windows, corrupt system files, and so on.

Outlined below are several methods and solutions to address this Outlook will not open Windows 10 problem. What’s more, regular email backup is needed to prevent data loss issue.

Suggestion: make a regular backup before making any configurations

You must not want to lose anything before and after you make some corrections towards your computer, this time, a proper backup is needed. You can use AOMEI Backupper to create a full backup and set automatic backup for your data.

AOMEI Backupper

Easiest Windows backup software for personal use.

Outlook 365 does not open in Windows 10? Enable it in 6 ways

If you're encountering issues like Outlook 2019 won’t open Windows 10 on a Windows computer, try these troubleshooting steps in the order presented here, starting from simpler solutions and progressing to more complicated ones.

Way 1. Restart your PC

Most of time a simple restart the PC can help solve problematic issue like Outlook not open.

Step 1. Close all open programs and ensure your work is saved.

Step2. Click the Start button, select the Power button, and choose Restart.

Then you can check by opening the Outlook again.

Way 2. Open Outlook in safe mode and disable add-ins

Step 1. Press Windows key + R at the same time to open the Run dialog.

Step 2. Type outlook /safe, and press Enter or click OK.

Run Box Outlook

Step 3. Inside the Profile Name wizard, select Outlook and click OK.


Step 4. Now, click on the File tab on the left. Click Options.


Step 5. Select Add-ins, and click Go.

Add ins

Step 6. Here, within the Add-ins wizard, disable all the suspicious add-ins to sort the issue. Click OK.

Disable All Suspicious Options

Step 7. Once the add-ins are disabled, close Outlook 2016 and restart the application normally to check whether it now opens as normal or not.

Way 3. Scan now command

Corrupt system files can be a potential reason why Outlook won't open in the Microsoft Windows 10 operating system. Fortunately, you can use a command in the command prompt to identify any corrupt system files. Follow these steps:

Step 1. Press the Windows key + Q at the same time to open the search bar and type cmd. Then choose Command Prompt and choose Run as administrator.

Step 2. In the windows, enter the following command and hit enter to go.

sfc / scannow

Command Prompt 2

After the scan is complete successfully, try to open Outlook 2016 again and check if it throws the same error message or is now working perfectly.

Way 4. Check for system updates

Step 1. Press Windows + I to open the Settings app.

Step 2. Then navigate to Windows Update > Check for Updates.

Windows Update

Step 3. Install any updates that are found.

Open Microsoft Office and check if Outlook can be opened now. If not, please follow the next methods.

Way 4. Repair Outlook

If Outlook is damaged, you can use the built-in Microsoft 365 repair utility to fix it. Follow these steps:

Step 1. Close all Office applications.

Step 2. Go to Start > Control Panel.

Step 3. Select Category View. And in the Programs section, select Uninstall a Program.

Step 4. Right-click Microsoft 365 and choose Change.

Step 5. Select Online Repair or Repair. Choose Yes if a user account control prompt appears.

Step 6. Restart Outlook after the repair process is completed.

This process aims to repair any issues with the Outlook application and ensure its proper functionality. After completing these steps, check if Outlook opens without any problems.

Way 5. Repair your Outlook profile

If Outlook profiles are corrupted, it can lead to various issues, including Outlook not opening. Follow these steps to repair the Outlook profile:

Step 1. Select File > Account Settings > Account Settings.

Step 2. Go to the Email tab. And choose Repair to open the Repair wizard (please note that this option is not available for Outlook Exchange accounts).

Step 3. Follow the prompts to complete the wizard.

Step 4. Restart Outlook after completing the repair process.

Repairing the Outlook profile can resolve corruption issues and potentially solve the problem of Outlook not opening. Check if the issue persists after performing these steps.

Way 6. Repair Outlook data files

If Outlook still doesn't open, use the Inbox Repair tool to find and possibly fix the problem.

Step 1. Open Control Panel and choose Programs and Features.

Step 2. Locate the entry for Microsoft Office and select it.

Step 3. Right-click on Microsoft Office, choose Change, and then select Repair.

Change Microsoft 365

Step 4. Follow the on-screen instructions to repair the data files.

Try opening Outlook again.

Backup Outlook emails before loss occur

Emails often contain critical information, and losing them can be disruptive. Having a reliable backup solution like AOMEI Backupper Professional can offer peace of mind by ensuring that valuable emails are safeguarded against accidental deletion, system failures, or other unforeseen events. This wonderful software has some distinguished features you should not miss:

▶ Resourceful email items are supported: you can backup the entire Outlook mailbox including mail folders (Inbox, Outbox, Drafts, etc.), Contacts, Calendar, Tasks, Notes, and more. Or specify one or more folders.
▶ Multiple backup locations: you have the flexibility to choose your backup destination, whether backup emails to external hard drive, NAS, network location, or cloud client.
▶ Automatic backup: it offers schedule backup option to allow you easily set up daily, weekly, monthly, event triggers, or USB plugin backups.
▶ Backup methods: it offers intelligent backup modes, which allows you to create incremental and differential backup, ensure that only the changes are copied, saving you valuable time and storage space

Now you have a general knowledge about this email backup software, you can backup Outlook to cloud service so that you can access it any time and place you want. Here is an example to backup Outlook emails with Google Drive.

AOMEI Backupper

Easiest Windows email backup software for personal use.

Step 1. Log in your Outlook emails account in the Outlook desktop app and close it. And also make sure you can access to Google Drive.

Step 2. Open AOMEI Backupper Professional, go to the Backup tab and select Outlook Backup.

Outlook Backup

Step 3. Modify a name to the Outlook backup task according to your preference. Click Add Outlook Data, then select the folders in your Outlook account as the backup source.

Add Outlook Data

Step 4. Click on the destination box, then choose Select a cloud drive, and choose Google Drive, and click OK.

Select a cloud drive

Step 5. Click on the Schedule Backup icon at the bottom of the page and customize the backup frequency as you need. Finally, click Start Backup to backup Outlook to Google Drive now.

Schedule Wake


In the article, we have 6 ways to troubleshoot Outlook mail will not open in Windows 10. Hoping one of the methods can solve your issue. additionally, having a regular backup for your email and the whole computer is needed. AOMEI Backupper Professioanl is the best option for you. Not only Outlook, it can support other email services like Hotmail, Gmail, Yahoo! and so on.

Maggie · Editor
Maggie is a technical editor from AOMEI and troubleshoots technical problems against data protection. She has received professional and systematic technical training. With a focus on user experience, security, and problem-solving, she always puts herself in the readers' shoes and provides them with valuable technical insights.