Hello, do you remember problem with internet explorer that Microsoft forced to use? This is even worse and sooner or later it will ends in juridical problem and heavy millions lost by Microsoft, let's hope sooner, waiting for that,, I move to Linux and already I've ordered Macs

Hello!

Many thanks for your support!

I tried the methods you suggested, but I still can not uninstall Outlook (new), as it auto-installs after I use the Mail app a couple of times.

Regarding the methods you suggested:

• I tried method one and then method 3, but after opening the Windows mail app a couple of times, it auto-installs Outlook (new) again and redirects me there.
• I also opened the link in Method 2, but I cannot find the Preferences folder inside the registry path of Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Preferences. What I have is just two lines (Default) - (no value) and Bitness - x86.

No, it does not work. Outlook (new) auto-installs itself.

This is so annoying, i do the same, uninstall and when open mail outlook is back

Dear Aetherum,

Thank you for your patience and cooperation.

First of all, please understand that starting from 2024, new Windows 11 devices will come pre installed with new Outlook as the default email application. Reference: Outlook for Windows: The Future of Mail, Calendar, and People on Windows 11 - Microsoft Support

Currently, if you wish to continue using Mail and Calendar without automatically redirecting to New Outlook, additional settings are required. Please refer to the following steps:

Note: The highlighted area is the current user name (# comment bar can be deleted)

1.Replace the YOURUSERNAME with actual username of your PC.

2.Select all the codes below and copy them.

3.Open PowerShell with administrator privilege, you can search PowerShell in search bar, right-click it and choose to run with administrator.

4.Once PowerShell is opened, paste the codes into it, and press enter.

Define the folder path to operate on

$folderPath = "C:\Users\YOURUSERNAME\AppData\Local\Packages\microsoft.windowscommunicationsapps_8wekyb3d8bbwe\LocalState\Migration"

Define the path of the file to delete

$fileToDelete = "$folderPath\settings.json"

1. Delete the specified file (if it exists)

if (Test-Path -Path $fileToDelete) {

Remove-Item -Path $fileToDelete -Force

Write-Host "File $fileToDelete has been deleted."

} else {

Write-Host "File $fileToDelete does not exist."

}

Get the username of the current logged-in user

$currentUser = [System.Security.Principal.WindowsIdentity]::GetCurrent().Name

2. Get the Access Control List (ACL) of the folder

$acl = Get-Acl -Path $folderPath

Define a new access rule to deny write access for the current user

$denyWriteRule = New-Object System.Security.AccessControl.FileSystemAccessRule($currentUser, "Write", "Deny")

Add the deny write access rule to the folder's ACL

$acl.AddAccessRule($denyWriteRule)

Apply the modified ACL to the folder

Set-Acl -Path $folderPath -AclObject $acl

Output the result of the operation

Write-Host "Write access denied for $currentUser on $folderPath"

The code performs two actions. You can also perform these actions manually if your code does not perform them correctly.

1. deletes the settings.json file inside C:\Users\YOURUSERNAME\AppData\Local\Packages\microsoft.windowscommunicationsapps_8wekyb3d8bbwe\LocalState\Migration

2. Add a deny write rule to the Migration folder security permissions.

Hope this help you, please feel free to let me know how it goes. If there is any deviation in my understanding, please forgive me and provide me with more details. I am more than happy to continue to help you.

Best Regards,

Addie.C - MSFT | Microsoft Community Support Specialist