如果您不想使用在单击文件或URI方案时启动的默认应用程序，您可以使用本地组策略编辑器^{(Local Group Policy Editor)}和注册表编辑器^{(Registry Editor)}来阻止它。

假设您有一个包含 URI 方案（如HTTP、mailto 等）的超链接。如果单击该http:链接，Windows 会打开默认浏览器^{(Windows opens the default browser)} 以显示该网页。同样，如果您单击一个mailto:链接，它会打开您计算机上的默认电子邮件客户端或应用程序，让您撰写电子邮件。这些功能可帮助您查看内容，而无需执行任何额外操作。但是，如果您想禁用由于URI或文件方案而导致的默认应用程序打开，这里是如何做到这一点的。

阻止^(Block)启动与文件或URI方案关联的应用程序

要防止启动与文件或URI方案关联的应用程序，请按照以下步骤操作 -

1. 按Win+R打开运行提示。
2. 输入gpedit.msc并点击 Enter 按钮。
3. 导航到Windows 组件中的^{(Windows Components)}应用运行^{(App runtime)}时。
4. 双击阻止启动与文件关联的桌面应用程序^{(Block launching desktop apps associated with a file)}。
5. 选择启用^(Enabled)。
6. 单击应用^(Apply)和确定^(OK)。
7. 双击阻止启动与 URI 方案关联的桌面应用程序^{(Block launching desktop apps associated with a URI scheme)}。
8. 选择启用^(Enabled)。
9. 单击应用^(Apply)和确定^(OK)。

让我们详细检查这些步骤。

首先，您必须在计算机上打开本地组策略编辑器^{(Local Group Policy Editor)}。为此，请按 Win+R，键入gpedit.msc，然后按 Enter 按钮。打开后，导航到此路径-

User Configuration > Administrative Templates > Windows Components > App runtime

在您的右侧，您将获得两个设置-

• 阻止^(Block)启动与文件关联的桌面应用程序
• 阻止启动与^(Block)URI方案关联的桌面应用程序

双击^{(Double-click)}它们中的每一个，选择 启用^(Enabled) ，然后单击 应用 ^(Apply )和 确定 ^(OK )按钮以保存更改。

如前所述，您可以在注册表编辑器^{(Registry Editor)}的帮助下做同样的事情。在开始之前，建议创建一个注册表文件备份^{(create a Registry file backup)} 并 创建一个系统还原点。

相关^(Related)：打开 Microsoft Store 应用程序的 URI 命令^{(URI Commands to open Microsoft Store apps)}。

^(Prevent)使用注册表编辑器^{(Registry Editor)}阻止启动与文件或URI方案关联的应用程序

要防止使用注册表编辑器启动与文件或^{(Registry Editor)}URI方案关联的应用程序，请执行以下步骤 -

1. 在任务栏搜索框中搜索regedit。
2. 在搜索结果中单击注册表编辑器。^{(Registry Editor)}
3. 在 UAC 提示中单击是按钮。^(Yes)
4. 导航到HKEY_CURRENT_USER中的关联^{(Associations)}。
5. 右键单击Associations > New > DWORD (32-bit) Value。
6. 将它们命名为BlockProtocolElevation和BlockFileElevation。
7. 将数值数据设置为1。
8. 单击确定^(OK)以保存更改。

要了解更多信息，请继续阅读。

要开始使用，请regedit在任务栏^(Taskbar)搜索框中搜索，然后在搜索结果中单击 注册表编辑器^{(Registry Editor)}。单击是^{(Yes )}按钮并在您的计算机上打开注册表编辑器^{(Registry Editor)}后，导航到此路径-

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Associations

如果您没有归档 Associations 密钥，请右键单击 Policies，选择 New > Key。之后，将其命名为 Associations。

之后，右键单击 关联^{(Associations)} 并选择 New > DWORD (32-bit) Value。

它将在右侧创建新的REG_DWORD值。^(REG_DWORD)将其命名为 BlockProtocolElevation。它表示 阻止启动与 URI 方案关联的桌面应用程序^{(Block launching desktop apps associated with a URI scheme)}。

按照相同的步骤创建另一个DWORD（32 位）值^(Value)并将其命名为 BlockFileElevation。它表示 阻止启动与文件关联的桌面应用程序^{(Block launching desktop apps associated with a file)}。

现在，双击每个REG_WORD值，并将值^(Value)数据设置为 1。

单击 确定 ^(OK )按钮保存更改。

希望能帮助到你。

How to Block launching apps associated with file or URI scheme

If you do not want to use the default app to be launched when you click on a file or URI scheme, you can block it using the Loсal Groυp Policy Edіtor as well as the Registry Editor.

Let’s assume that you have a hyperlink containing a URI scheme such as HTTP, mailto, etc. If you click the http: link, Windows opens the default browser to show you the webpage. Similarly, if you click on a mailto: link, it opens the default email client or app on your computer to let you compose the email. These functionalities help you to view the content without doing anything extra. However, if you want to disable the default app openings due to a URI or file scheme, here is how to do that.

Block launching apps associated with file or URI scheme

To prevent launching apps associated with file or URI scheme, follow these steps-

1. Press Win+R to open the Run prompt.
2. Type gpedit.msc and hit the Enter button.
3. Navigate to App runtime in Windows Components.
4. Double-click on Block launching desktop apps associated with a file.
5. Select Enabled.
6. Click on Apply and OK.
7. Double-click on Block launching desktop apps associated with a URI scheme.
8. Select Enabled.
9. Click on Apply and OK.

Let’s check out these steps in detail.

At first, you will have to open the Local Group Policy Editor on your computer. For that, press Win+R, type gpedit.msc, and hit the Enter button. Once opened, navigate to this path-

User Configuration > Administrative Templates > Windows Components > App runtime

On your right-hand side, you will get two settings-

• Block launching desktop apps associated with a file
• Block launching desktop apps associated with a URI scheme

Double-click on each of them, select Enabled and click on Apply and OK buttons to save the change.

As mentioned earlier, you can do the same with the help of the Registry Editor. Before getting started, it is recommended to create a Registry file backup and create a System Restore point.

Related: URI Commands to open Microsoft Store apps.

Prevent launching apps associated with file or URI scheme using Registry Editor

To prevent launching apps associated with file or URI scheme using Registry Editor, follow these steps-

1. Search for regedit in the Taskbar search box.
2. Click on Registry Editor in the search result.
3. Click the Yes button in the UAC prompt.
4. Navigate to Associations in the HKEY_CURRENT_USER.
5. Right-click on Associations > New > DWORD (32-bit) Value.
6. Name them as BlockProtocolElevation and BlockFileElevation.
7. Set the Value data as 1.
8. Click OK to save the change.

To know more, keep reading.

To get started, search for the regedit in the Taskbar search box and click on Registry Editor in the search result. After clicking the Yes button and opening the Registry Editor on your computer, navigate to this path-

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Associations

If you do not file Associations key, right-click on Policies, select New > Key. Following that, name it as Associations.

After doing that, right-click on the Associations and select New > DWORD (32-bit) Value.

It will create new REG_DWORD value on the right-hand side. Name it as BlockProtocolElevation. It represents Block launching desktop apps associated with a URI scheme.

Follow the same steps to create another DWORD (32-bit) Value and name it as BlockFileElevation. It represents Block launching desktop apps associated with a file.

Now, double-click on each REG_WORD value, and set the Value data as 1.

Click the OK button to save changes.

Hope it helps.

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