Depending on your specifics, the reason you are experiencing this problem can have several underlying causes. Here’s a list of scenarios that you should investigate: Now that you are familiar with the most common reasons why you might end up experiencing this issue on your PC, let’s go over a series of verified fixes that other users who were also experiencing the error code 0x800c0004 when attempting to add a Yahoo email account to the Windows Mail app on Windows 11.
1. Run the Store Apps Troubleshooter
Most native Windows 11 applications also struggle with the same issue, which is the root of this problem. According to many users affected by this issue, the problem may be resolved by utilizing the Windows Store Apps troubleshooter and applying the suggested repair. Note: Keep in mind that the same list of requirements applies to the primary store component and any native apps running on the Universal Windows Platform (UWP). You may predict that a shared Windows Mail app dependency is affected following a faulty update or due to any other form of file corruption. In situations like these, using the Windows Apps Troubleshooter and allowing its automated repair component to take care of the issue is the most effective course of action that can be taken. The Windows Apps Troubleshooter is a repair tool with many automatic repair choices that may be used if a scenario known to be problematic is detected. If you haven’t already, run the Windows App Troubleshooter; then, once you’ve done so, follow the steps below to execute the proposed fix to repair any shared dependencies you may have: If the problem is still not fixed, move to the next method below.
2. Remove the Yahoo account
It has come to our attention that you should be prepared to cope with the identical 0x800c0004 problem in a scenario in which the account giving you the error when you try to add it is already linked to the Windows 11 Mail app. To solve this problem, you must delete your Yahoo account before trying to add it again. Several affected users have confirmed that they managed to get this issue resolved by accessing the Manage Accounts tab (inside the Settings menu of the Mail app) and removing the Yahoo account: Here’s who to do this: If the problem is still not fixed, move to the next method below.
3. Generate an email password from Yahoo
As it turns out, you can also anticipate having to deal with this problem if the password you’re using to try to connect your Yahoo mail to the Windows Mail program is incorrect. Note: After the latest protocol update that Yahoo pushed, you need to generate a different password to connect your mailbox to a 3rd party email client like Windows Mail. To resolve this problem, go into your Yahoo mail account using any browser, create a password for a different app, and use that password to complete the connection. Here’s what you need to do: If the problem is still not fixed, move to the next method below.
4. Update the Mail App
Another common source of this issue is an outdated Windows 11 Mail program version that won’t update itself. When they manually updated the UWP app, other users who had the same problem said it was resolved. Note: When you have pending Windows updates waiting to be installed on your computer, this procedure is often proven successful. Before using the steps below to upgrade the Windows 11 mail app via the Microsoft Store, it is advised that you take the time to apply all pending Windows updates (security, cumulative, and feature updates). Here’s what you need to do to update the Mail app: If the same problem persists, move down to the next method below.
5. Repair or reset the Windows 11 Mail App
If none of the above-mentioned fixes has worked for you, you may be dealing with corrupted cached data, which prevents the Mail app from correctly assimilating new accounts. You will need to fix or reset the Calendar and Mail apps because they all reside on the same panel. Fortunately, as many worried users have confirmed, you may be able to resolve this issue by restarting the Windows 11 mail app through the appropriate channels. If you’re experiencing this issue with Windows 11 and haven’t already tried repairing and resetting the Windows Email program, the procedures outlined below may be of assistance: 7. Sync the Windows 11 mail app once again to see if the problem has been fixed after completing both tasks successfully. If the same problem is still occurring, move to the next potential fix below.
6. Reinstall the Mail & Calendar app
If the procedure described above did not produce the desired results, you should try reinstalling the entire Mail and Calendar component by accessing the Installed Apps tab of the Settings menu. This should be done only if the reset and repair procedure described above did not produce the desired results. This procedure has been tested and shown to function for many users, and the Windows 11 Home and Windows 11 PRO editions are the only ones on which we are seeing this issue. Before downloading the component from the Microsoft Store, you will first need to use the Apps menu to remove the Mail & Calendar Universal Windows Platform app completely, then restart your device and reinstall the component. For detailed, step-by-step guidance on how to achieve this, please follow the guidelines that are listed below: If the same issue is still occurring, move to the next method below.
7. Enable 2FA for your Yahoo mail
It has come to our attention that because Yahoo has changed its security procedures, it is now not feasible to link a Yahoo account to a third-party email aggregator such as the Windows Mail program if two-factor authentication is not activated. If two-factor authentication (2FA) is turned off for your account, the issue can be remedied by turning on this component and integrating it with the Windows Mail applications. Here’s what you need to do: If the same 0x800c0004 error still occurs, move down to the next method below.
8. Deploy DISM & SFC scans
If you have tried every workaround described above and are still receiving the same issue when you try to link your Yahoo account to the native mail software that comes with Windows 11, you should at least think that you are dealing with a problem related to file corruption in the system. In this particular scenario, you need to make an effort to repair the corrupted files causing the mail program to malfunction and give you the 0x800c0004 error number. SFC, which stands for System File Checker, and DISM, which stands for Deployment Image Servicing and Management should be run in rapid succession to replace corrupted system files with healthy equivalents and failed storage sectors with unused equivalents. Here’s what you need to do: If you’re still experiencing the same issue, move to the final potential fix below. Note: It is essential that you take into consideration the fact that DISM is a more recent technology that calls for a reliable connection to the internet. This is vital because DISM will utilize a sub-component of WU to get healthy replacements for the problematic files that need to be replaced, and finding these alternatives is necessary. 6. Successfully, give your computer one last restart and check to see whether it has finally resolved the issue.
9. Perform a repair install
If you’ve made it this far, your problem is probably the consequence of system file corruption, which is impossible to resolve using conventional methods. In this circumstance, the suggested course of action to resolve the issue without completing a complete OS reinstall is refreshing every Windows component (including boot data). There are two possibilities:
Repair Install – This more time-consuming procedure is also known as in-place repair. The advantage is that you may preserve your personal files—including music, movies, software, and even certain user preferences—without creating a backup in advance, even if you must provide an installation medium.Clean installation – In Windows 11, you may launch it directly from the menu without needing an installation DVD. You will lose your personal data if you don’t back it up before beginning this process.
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