Microsoft Edge Clickonce

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Edge Flags #edge Click Once

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Microsoft Edge Clickonce Flag

Launch Microsoft Edge. Enter edge://flags in the address bar, then press Enter on your keyboard. Begin typing ClickOnce Support in the search bar to display ClickOnce Support in the Experiments list. Select Enabled from the dropdown menu. Nov 20, 2020 Microsoft Edge 87 enables the ClickOnce deployment by default. It will reduce the barriers for enterprises to deploy software and better align with Microsoft Edge Legacy browser behavior. The enterprise NTP blends the Office 365 productivity page we offer to users signed in with their work or school account with personalized, work-relevant.

You can configure the ClickOnce trust prompt to control whether end users are given the option of installing ClickOnce applications, such as Windows Forms applications, Windows Presentation Foundation applications, console applications, WPF browser applications, and Office solutions. You configure the trust prompt by setting registry keys on each end user's computer.

The following table shows the configuration options that can be applied to each of the five zones (Internet, UntrustedSites, MyComputer, LocalIntranet, and TrustedSites).

OptionRegistry setting valueDescription
Enable the trust prompt.EnabledThe ClickOnce trust prompt is display so that end users can grant trust to ClickOnce applications.
Restrict the trust prompt.AuthenticodeRequiredThe ClickOnce trust prompt is only displayed if ClickOnce applications are signed with a certificate that identifies the publisher.
Disable the trust prompt.DisabledThe ClickOnce trust prompt is not displayed for any ClickOnce applications that are not signed with an explicitly trusted certificate.

The following table shows the default behavior for each zone. The Applications column refers to Windows Forms applications, Windows Presentation Foundation applications, WPF browser applications, and console applications.

ZoneApplicationsOffice solutions
MyComputerEnabledEnabled
LocalIntranetEnabledEnabled
TrustedSitesEnabledEnabled
InternetEnabledAuthenticodeRequired
UntrustedSitesDisabledDisabled

You can override these settings by enabling, restricting, or disabling the ClickOnce trust prompt.

Enable the ClickOnce trust prompt

Enable the trust prompt for a zone when you want end users to be presented with the option of installing and running any ClickOnce application that comes from that zone.

To enable the ClickOnce trust prompt by using the registry editor

  1. Open the registry editor:

    1. Click Start, and then click Run.

    2. In the Open box, type regedit, and then click OK.

  2. Find the following registry key:

    HKEY_LOCAL_MACHINESOFTWAREMICROSOFT.NETFrameworkSecurityTrustManagerPromptingLevel

    If the key does not exist, create it.

  3. Add the following subkeys as String Value, if they do not already exist, with the associated values shown in the following table.

    String Value subkeyValue
    InternetEnabled
    UntrustedSitesDisabled
    MyComputerEnabled
    LocalIntranetEnabled
    TrustedSitesEnabled

    For Office solutions, Internet has the default value AuthenticodeRequired and UntrustedSites has the value Disabled. For all others, Internet has the default value Enabled.

To enable the ClickOnce trust prompt programmatically

  1. Create a Visual Basic or Visual C# console application in Visual Studio.

  2. Open the Program.vb or Program.cs file for editing and add the following code.

  3. Build and run the application.

Restrict the ClickOnce trust prompt

Restrict the trust prompt so that solutions must be signed with Authenticode certificates that have known identity before users are prompted for a trust decision.

To restrict the ClickOnce trust prompt by using the registry editor

  1. Open the registry editor:

    1. Click Start, and then click Run.

    2. In the Open box, type regedit, and then click OK.

  2. Find the following registry key:

    HKEY_LOCAL_MACHINESOFTWAREMICROSOFT.NETFrameworkSecurityTrustManagerPromptingLevel

    If the key does not exist, create it.

  3. Add the following subkeys as String Value, if they do not already exist, with the associated values shown in the following table.

    String Value subkeyValue
    UntrustedSitesDisabled
    InternetAuthenticodeRequired
    MyComputerAuthenticodeRequired
    LocalIntranetAuthenticodeRequired
    TrustedSitesAuthenticodeRequired

To restrict the ClickOnce trust prompt programmatically

  1. Create a Visual Basic or Visual C# console application in Visual Studio.

  2. Open the Program.vb or Program.cs file for editing and add the following code.

  3. Build and run the application.

Disable the ClickOnce trust prompt

You can disable the trust prompt so that end users are not given the option to install solutions that are not already trusted in their security policy.

To disable the ClickOnce trust prompt by using the registry editor

  1. Open the registry editor:

    1. Click Start, and then click Run.

    2. In the Open box, type regedit, and then click OK.

  2. Find the following registry key:

    HKEY_LOCAL_MACHINESOFTWAREMICROSOFT.NETFrameworkSecurityTrustManagerPromptingLevel

    If the key does not exist, create it.

  3. Add the following subkeys as String Value, if they do not already exist, with the associated values shown in the following table.

    String Value subkeyValue
    UntrustedSitesDisabled
    InternetDisabled
    MyComputerDisabled
    LocalIntranetDisabled
    TrustedSitesDisabled

To disable the ClickOnce trust prompt programmatically

  1. Create a Visual Basic or Visual C# console application in Visual Studio.

  2. Open the Program.vb or Program.cs file for editing and add the following code.

  3. Build and run the application.

See also