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Fix: ‘Windows Mail Error Code 0x80040b0b’ issue: In most cases, users will encounter the error 0x80040b0b when they are attempting to add an account to the Mail & Calendar app. This error in the Mail app may, in certain circumstances, cause an existing email to be deleted, making it impossible for users to add new messages. According to the reports of various users, the error code 0x80040b0b is particularly widespread in Outlook and Hotmail email accounts. Users will also have a more difficult time syncing their Mail within the app because of this issue. Users have the ability to add multiple email accounts to the Mail app that is included with Microsoft Windows.
Some examples of these accounts include Gmail, Yahoo, Outlook, and others. Because of this, users are able to easily manage their email accounts and account information within this application. However, just recently, after the most recent patch update for the Windows Mail app, a lot of users have started getting an unknown error code 0x80040b0b, which means that they are unable to check their emails using the Mail app. After conducting some research, we have identified a few potential solutions to Fix ‘Windows Mail Error Code 0x80040b0b’ issue. Therefore, if you are experiencing this problem, it is imperative that you read this guide completely from beginning to end.
Causes of the ‘Windows Mail Error Code 0x80040b0b’ issue
- Corrupted Mail App: If the Windows Mail application is corrupted or facing issues, it can trigger error code 0x80040b0b.
- Server Connectivity Problems: Issues with the mail server settings or connectivity problems can lead to this error. It may occur if the server settings are incorrect or if the server is temporarily down.
- Authentication Errors: If there are problems with the login credentials or authentication, Windows Mail may not be able to access your email account, resulting in this error.
- Synchronization Issues: The error may occur when Windows Mail is unable to synchronize your emails, contacts, or calendar events with your email service provider.
- Antivirus or Firewall Interference: Sometimes, third-party antivirus software or firewall settings can block Windows Mail from accessing your email account, leading to this error.
- Corrupted Windows Profile: If the user profile associated with Windows Mail is corrupted, it can result in various issues, including error code 0x80040b0b.
- Outdated Mail App: Running an outdated version of Windows Mail might lead to compatibility issues with the latest updates or email service changes.
Fix: ‘Windows Mail Error Code 0x80040b0b’ issue
Update the Mail App

- Open the app for the Microsoft Store.
- In the left pane, click the Library button.
- Press the “Get updates” button.
- Find the option that says “Mail and Calendar.”
- To update, click the button next to Mail and Calendar.
- Wait until the process of updating is done.
Reinstall the Mail App
- Hold down the Windows key.
- Use the search bar to look for PowerShell.
- When Windows PowerShell comes up, choose Run as administrator.
- Type the following in the PowerShell window:
- Find-object {$_.packagename –like “windowscommunicationsapps”} | remove-appxprovisionedpackage –online | Get-appxprovisionedpackage –online
- Do what it says and press Enter.
- Head over to the Windows Store.
- Look for the app that has Mail and Calendar.
- You can get the Mail and Calendar apps again from the Windows Store.
Re-Add all Accounts
- Start up the Mail app.
- In the bottom left corner, click on the Settings icon.
- Click on Take Care of Accounts.
- Pick out the account you want to delete.
- Select “Delete account” from the menu.
- If you don’t see the “Delete account” button, you’re probably trying to get rid of the email account that Windows added for you when you first logged in.
- After getting rid of the accounts, go back to Settings and click “Add account.”
- Pick the kind of account you want to add, like Outlook, Gmail, Yahoo, etc.
- Type in the required information, such as your account name, password, and email address. The name of the account will show up in the List of Accounts and the Mail app’s left pane.
- To move on, click “Sign in.”
- When you’re done setting up your account, click “Done.” Your data will start to sync right away.
Repair or Reset the Mail and Calendar App
- To open the Settings app, press the Windows key and the letter “I.“
- In the left pane, click on Apps.
- Pick out apps and features.
- There are a lot of apps. Find Mail and Calendar and click on the three dots next to their names.
- Pick the Advanced tab.
- When you get to “Reset,” click on “Repair.“
- Start up the Mail and Calendar app.
- See if the issue is still there.
- If so, click “Reset” again.
Run the Microsoft Store Apps Troubleshooter
- Start up the computer.
- To open the Settings app, click the gear-shaped icon.
- Pick up the Settings app and go to the System tab.
- Press on Fix Issues.
- Click on Other troubleshooters.
- Click the Run button next to Microsoft Store Apps when you find it.
- The troubleshooter can be used by following the steps shown on the screen.
Conclusion
When you try to send or receive emails using Windows Mail, do you get an error message that reads “Windows Mail Error Code 0x80040b0b”? It’s very aggravating, isn’t it? But you shouldn’t worry about it because you’re not the only one dealing with this problem. This error has been encountered by a significant number of Windows users; the good news is that it can be resolved. In this detailed tutorial, we will demonstrate how to fix the Windows Mail error code 0x80040b0b by walking you through each step in order. So, let’s get this show on the road! If you want to know more information about this issue so you can visit Microsoft Official Website.
Questions and Answers
If you are unable to sync your email account with the Mail app, it is possible that the request sent by the Mail app has been blocked by either a third-party antivirus program or Windows Defender. In this particular scenario, disabling your antivirus software and Windows Defender may be required in order to fix the error code 0x8000000b.
Click Start, then click Mail to open it. Click the Manage Accounts button, then choose your email account from the list. Choose Advanced mailbox settings after clicking the Change mailbox sync settings button. Check to see that the addresses of your incoming and outgoing email servers, as well as the ports, are correct.
Each user’s configuration of Windows Mail settings is unique, and those settings dictate how the program looks and behaves for that user. The majority of Windows Mail’s settings can be customized by utilizing the Options window, which can be accessed by navigating to Tools > Options from the main Windows Mail menu.
Gmail comes pre-installed on all Android devices and is compatible with Microsoft® Office 365 and Exchange ActiveSync accounts. Gmail also supports attachments. To link your Microsoft® Office 365 or Exchange ActiveSync account to your Gmail inbox, please follow these steps: Launch the app for configuring your device’s settings. Select the Passwords and accounts option.