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How to Disable the "How do you want to open this? Keep using this app" Notification in Windows 10

When you install a new app in Windows 10 you may see a notification letting you know that you have a new app that can open an application that already has a default file association defined. Below are some examples of how the notifications appear and also two ways to disable these "New App Installed" notifications.

Notification Examples:

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OPTION1: Using Group Policy Preferences > Registry​

Step 1 – Create a new GPO for Group Policy Preferences and give it a descriptive name.

Step 2 – Select Computer Configuration > Preferences > Windows Settings > Registry

Step 3 – Right-click on Registry and choose New > Registry Item

Step 4 – Create the Registry policy item using the values below as a guide.

Hive: HKEY_LOCAL_MACHINE
Key Path: SOFTWARE\Policies\Microsoft\Windows\Explorer
Value name: NoNewAppAlert
Value type: REG_DWORD
Value data: 00000001

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Policy should look like below when created:

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Step 5 – Lastly, apply policy to computer OU or domain where you want New App notifications to be disabled.

OPTION2: Using Endpoint Policy Scripts Manager​

Step 1 – Create a new GPO for Netwrix Endpoint Policy Manager (formerly PolicyPak) Scripts Manager and give it a descriptive name.

Step 2 – Select Computer Configuration > PolicyPak > Scripts Manager

Step 3 – Right-click on Scripts Manager and select "Add Policy…"

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Step 4 – At the "Specify policy target" screen stick with the default "Apply this policy to the computer (default)" then click "Next".

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Step 5 – At the "On apply action" screen select "PowerShell script" from the dropdown and then copy in the text below then click "Next".

# Disable New app Alerts    if((Test-Path -LiteralPath
                        "HKLM:\SOFTWARE\Policies\Microsoft\Windows\Explorer") -ne $true)
                        { New-Item "HKLM:\SOFTWARE\Policies\Microsoft\Windows\Explorer"
                        -force -ea SilentlyContinue };    New-ItemProperty -LiteralPath
                        'HKLM:\SOFTWARE\Policies\Microsoft\Windows\Explorer'
                        -Name 'NoNewAppAlert' -Value 1 -PropertyType DWord -Force
                -ea SilentlyContinue;

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Step 6 – OPTIONAL: At the "On revert action" screen select "PowerShell script" from the dropdown and then copy in the text below then click "Next".

#Enable new app alerts    if((Test-Path -LiteralPath "HKLM:\SOFTWARE\Policies\Microsoft\Windows\Explorer") -ne $true) 
{ New-Item "HKLM:\SOFTWARE\Policies\Microsoft\Windows\Explorer" -force -ea SilentlyContinue }
;    New-ItemProperty -LiteralPath 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\Explorer'
                        -Name 'NoNewAppAlert' -Value 0 -PropertyType DWord -Force -ea
                SilentlyContinue;

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Step 7 – At the "Specify process mode" screen select the "Once or when forced" option then click next.

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Step 8 – Give the policy a descriptive name and then click finish.

Step 9 – Lastly, apply policy to computer OU or domain where you want New App notifications to be disabled.