Mail app

Fix Windows Mail App Error 0x801901f5

This guide presents working solutions to solve Windows Mail Application Error 0x801901f5 on your Windows 11/10 computer. The error message states that the Contacts and Calendars app failed to sync with the Mail app. The message says the following-

We are having a problem downloading messages. Make sure you’re signed in and your account information is correct, then try again.
Error code: 0x801901f5.

Fix Windows Mail App Error 0x801901f5

Here are some suggestions that can help you fix Mail app error code: 0x801901f5. when downloading messages:

  1. Re-enter account details
  2. Change privacy settings
  3. Clear Microsoft Store cache
  4. Repair or reset Windows Mail app
  5. Uninstall and reinstall the Mail app

1]Re-enter account details


The first thing you should try is deleting the account and then re-entering the account details. You can do this by following the steps below.

  1. To get started, open the Start menu by pressing the Windows key.
  2. In the space provided, type To post and press the enter key.
  3. In the Mail app, click on the gear icon present at the bottom left corner.
  4. Choose Manage Accounts under the Settings window.
  5. Click on the problematic account.
  6. In the Account Settings window that appears, choose Delete account from this device option.
  7. Confirm your selection in the next window by pressing the key To delete option.
  8. The account has been successfully deleted from the Mail app.
  9. Now click the gear icon in the lower left corner again and choose Manage Accounts.
  10. Click on Add an account option.
  11. Enter the credentials to re-login with the account.

That’s it. Check if the issue is resolved or not. Otherwise, try the next solution on the list.

To see: Error 0x80040154 in Mail and Calendar app on Windows

2]Change privacy settings

Change privacy settings

The Mail & Calendar app needs access to your mail to work as expected. If not, you are most likely to encounter Windows Mail application error 0x801901f5. Here’s how to provide the required permission.

  1. Open your system settings by pressing Windows + I hotkey.
  2. Click on Privacy and Security option present in the left panel of the screen.
  3. In the next window, choose the Email option present under App Permissions.
  4. Enable the toggle present next to Access to emails.
  5. Enable the toggle present next to Allow apps to access your email and Mail and Calendar.

That’s it. Now restart your system and check if the issue is resolved or not. Otherwise, try the next solution.

Lily: Fix Windows Mail app error codes 0x8000000b, 0x8007042b, 0x80040154, 0x8000ffff, 0x8007000d, 0x80c8043e, 0x80070435, 0x8007006d, 0x80070425.

3]Clear Microsoft Store Cache

The next effective solution that you can try in the situation is to clear Microsoft Store cache. Here’s how.

  1. Open the command prompt in administrator mode.
  2. Type wsreset.exe and press the enter key.
  3. Wait for the command to be executed.
  4. Once done, Microsoft Store will appear automatically.

Alternatively, you can open the Start menu, type wsreset.exe, and press Enter key to clear Microsoft Store cache.

Lily: Fix Error 0x80070490 in Mail App on Windows

4]Repair or Reset Windows Mail App

Repair and Reset Mail

There may be a persistent issue with the Mail app that is causing the error in the question. You can use the built-in repair function to get rid of any minor bugs that are causing the problem. Here’s how.

  1. Open Settings on your system.
  2. Go to Apps > Apps & features.
  3. Locate Mail and Calendar, click on the three dots present next to it and choose advanced option.
  4. In the next window, click the Repair option.

Wait for the repair process to complete. Once done, check if the issue still occurs. If so, you will need to reset the Mail and Calendar app. You can do this by clicking on the Reset option present under the same window.

5]Uninstall and reinstall the Mail app

If none of the steps helped, you can uninstall the Mail app and then reinstall it. Here are the steps to do it.

Open Windows PowerShell in administrator mode.

Copy-paste the following command and press Enter key to uninstall the Mail app.

Get-appxprovisionedpackage –online | where-object {$_.packagename –like “*windowscommunicationsapps*”} | remove-appxprovisionedpackage –online

Wait for the command to be executed.

Once done, reinstall the Mail and Calendar app on your system.

That’s it. Now log in with your email account and you will notice that you no longer face the problem.

How do I fix errors in the Mail app?

Depending on the cause, there are different ways to fix errors in the Mail app. But before trying anything technical, you need to check the connectivity to your mail server. Windows Firewall can be the main reason for the problem. so allow mail and calendar through windows firewall. Along with that, you can re-add your account, change advanced mailbox settings, and check privacy settings.

How to Fix Windows Update Error Code 0x801901f5?

Below is the list of all effective solutions to try to fix Windows update error code 0x801901f5.

  1. Windows Update Troubleshooter
  2. Reset Windows Update Components
  3. Delete the contents of the SoftwareDistributon & Catroot2 folder
  4. Run Windows Update in clean boot state.

Read more : Fix Mail app error code 0x8007139f on Windows 10/11.

Windows Mail Application Error 0x801901f5