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Fix Windows 10 Mail App Error 0x8000000b



If you try to configure emails in your Mail app or maybe synchronize them, you will encounter a problem with Windows 10 Mail. The Mail app is not syncing with an error code 0x8000000b. This problem occurred mainly when setting up Gmail and Yahoo email accounts in Windows 10 Mail.

Normally, once you have entered your email address and password, the Mail app will automatically attempt to communicate with the email server to obtain server settings.

Complete Error Message:

Something went wrong, We’re sorry, but we weren’t able to do that. Error code 0x8000000b

What is the Cause of the Error 0x8000000b?

A syncing problem with Windows 10 Mail application can be caused by several factors. Most often the problem occurs due to one of the following reasons.

  • Incorrect password.
  • Mail server problem.
  • Unstable Internet connection.
  • Incorrect virus protection or firewall settings.
  • POP and IMAP settings are not activated on the mail server.

With the same error message you can get other error codes such as 0x8007042b, 0x80040154, 0x8000ffff, 0x8007000d, 0x80c8043e, 0x80070435, 0x8007006d, 0x80070425. No matter what error code you get, the fact is that you still cannot add your email account This ultimately prevents you from using your Gmail account on the built-in mail application on Windows 10.

How to fix the Windows 10 Mail App 0x8000000b Error?

To solve the issue and properly configure your email account in your Mail app, perform any of the troubleshooting methods below.

We recommend that you create a System Restore point first before continuing with troubleshooting. If something is wrong during process, you can easily restore it to the previous working state.

Solution 1 – Enable Folders

Enable Folders in Gmail

Outlook and Mail for Windows 10 require access to folders in Gmail. Make sure that the folders are configured to be displayed in IMAP.

  1. In your browser, go to Gmail.com.
  2. Select Settings.
  3. Select the Labels tab.
  4. In IMAP, make sure that IMAP Display is selected for Inbox, Sent, Trash, and All Messages folders.
  5. You can also choose to View in IMAP for other tags you want to see in Outlook or Mail for Windows 10.

Solution 2 – Sign in Using Advanced Settings

If the above solution does not work for you, this is another method you can try. Here you will login to your account using advanced settings.

For Google:

If you have a Gmail address, follow these instructions. First of all, you need to activate some settings in your Gmail account settings.

  • Sign in to your Gmail account using your browser.
  • After logging in, activate IMAP.
  • Finally, you need to enable the “Allow less secure apps” option in your Gmail account settings.
  • Once you have followed the instructions above, it’s time to login.
  1. Click Start and open Mail app.
  2. Open the Mail Settings.
  3. Select Accounts, and then click Add Account.
  4. Click Advanced Configuration.
  5. You will be prompted to select your email account type and select “Internet email”.
  6. Enter your account information. In the Inbox Server field, enter the following: imap.gmail.com:993
  7. Select IMAP4 as “Account Type” and enter the following in the “Outbound Email Server” field: smtp.gmail.com:46
  8. After entering all the details, click “Login”.

For Outlook:

If you have an Outlook email, follow these steps:

  1. Open Mail and go to Settings.
  2. Select Accounts, and then click Add Account.
  3. Instead of selecting Outlook, select Exchange.
  4. Enter your e-mail address and click Next. You will be prompted to enter your password.
  5. Click Login.
  6. Check if your problem is fixed.

Solution 3 – Reset the Mail App


Error 0x8000000b error can be eliminated by resetting the incorrectly functioning Windows 10 applications. Once done, make sure that your Mail app is working properly.

  1. Tap the Windows Logo + I on your keyboard and open the Settings.
  2. Tap System, select Apps & Features, and then click on the Mail app.
  3. Click Advanced options.
  4. In the Advanced options, tap Reset.
  5. Tap Reset again to confirm.
  6. You can now close the Settings application and return to the desktop.

Solution 4- Re-register the Mail App

Windows Powershell

If a particular application does not work in Windows 10, re-registering the application can also help correct the error code 0x8000000b.

  1. Click Search in the taskbar and enter cmd.exe in the corresponding field. When you see the result, right-click on the command line and select Run as administrator.
  2. If you see UAC, click Yes to continue.
  3. In the black box, type the following command, and then press Enter.
PowerShell -ExecutionPolicy Unrestricted -Command "& {$manifest = (Get-AppxPackage windowscommunicationsapps).InstallLocation + '\AppxManifest.xml' ; Add-AppxPackage -DisableDevelopmentMode -Register $manifest}"

When this is done, exit the command line window and restart the computer.

Solution 5 – Allow Mail Through the Windows Firewall

Allow Mail App in Windows Firewall

Error code 0x8000000b means that the Mail application cannot connect to the Gmail IMAP server. Make sure that your firewall allows outbound connections to ports 993, 465 and 587. Some antivirus software can also cause this problem, so try to temporarily disable email scanning to allow direct connection.

To allow Mail app to use the Windows Firewall:

  1. Return to the Windows Defender Security Center.
  2. Click on the “Firewall and Network Protection” button.
  3. Select “Allow an app through firewall” and then “Change settings”.
  4. In the list of authorized applications, make sure you put a checkmark in the Private and Public boxes for Mail app.

Solution 6 – Disable Firewall

Temporarily Disable Windows Defender Firewall

If the error 0x8000000b is still present, you can try to disable the firewall and check if it works. To do this, follow these steps:

  1. Open the Windows Defender Center again.
  2. Go to the Firewall and Network Protection section.
  3. Now select the network profile and disable the Windows Firewall.
  4. Now try running the Mail application.
  5. You can delete and add your account if it hasn’t been previously synchronized. To do this, proceed as follows:
  • Enter Mail in the Start menu.
  • After clicking on the application, go to the Settings icon.
  • Select your account and select Delete Account.
  • You can then add your account again.


I hope that the troubleshooting steps above will help you to solve the Windows 10 Mail 0x8000000b error on Windows 10 computers. Let us know what you think, please leave us a message or a comment below.



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