Windows操作系统中的每个文件在其文件名中都有一个扩展名，例如。.txt, .doc等。这些扩展名用于标识程序，windows 可以使用它打开这个文件。您可以在Windows 11 或Windows 10 操作系统中设置或更改这些文件关联。 

^(Change)Windows 11/10更改文件关联

1]使用设置

在更高版本的Windows 10中，您必须执行以下操作才能更改文件关联^{(File Associations)}和扩展名：

1. 打开 Windows 10 设置
2. 选择应用程序
3. 点击默认应用
4. 向下滚动并单击蓝色的按文件类型选择默认应用程序^{(Choose default apps by file type)}链接。
5. 在此处进行更改。

您甚至可以按文件类型或协议选择默认应用程序，并按应用程序设置默认值。

要在Windows 11^{(Windows 11)}中按文件类型选择默认应用，请执行以下操作：

• 按 Win+I 打开 Windows 设置。
• 转到 Apps > Default apps。
• 单击 按文件类型选择默认值^{(Choose defaults by file type)}选项。
• 选择文件类型或扩展名。
• 选择^(Choose)您要设置为默认的应用程序。

提示^(TIP)：如果您无法将文件类型与程序相关联，这篇文章将为您提供帮助。

2]使用文件属性

您还可以右键单击要更改其关联的文件>> Properties > General选项卡> TypeFile > Change > Choose从列表中选择一个程序或推荐的程序或其他程序，或者单击浏览^(Browse)以选择一个。

3]通过文件资源管理器

在资源管理器^(Explorer)中选择文件，右键单击它，选择打开方式^{(Open with)}，然后选择程序或根据需要选择选择其他应用程序^{(Choose another app)}。

4]使用控制面板

要使用控制面板^{(Control Panel)}在Windows 10/8/7中设置文件^(File) 关联^{(Associations)}：

1. 打开控制面板
2. 单击控制面板主页
3. 选择默认程序
4. 单击设置关联
5. 在列表中选择一种文件类型，然后单击更改程序^{(Change Program)}。

您将看到一个程序^(Programs)列表以及描述和当前默认值^{(Current Default)}。您可以单击更改程序^{(Change program)}来设置或更改当前的默认程序。

5]使用免费软件类型

如果您愿意，您还可以使用此免费软件轻松设置、重置、更改文件关联^{(File Associations)}和扩展名。

Types是一个免费且轻量级的Windows配置实用程序，它允许您编辑Windows 资源管理器^{(Windows Explorer)}中显示的各种文件类型的程序关联、图标、上下文菜单和其他属性。

它是内置Windows^(Windows)文件类型实用程序的一个值得替代的工具。

阅读：^(Read:) 如何使用注册表编辑器删除文件类型关联

文件关联修复 Windows

如果您希望轻松修复文件关联，您可能需要查看我们的免费软件File Association Fixer。如果您无法更改默认程序扩展，请转到此处。这篇文章将帮助您修复损坏的 EXE 文件关联^{(fix broken EXE file associations)}。

您还可以使用设置和DISM 工具^{(DISM Tool)}在 Windows 中配置、导出、导入应用程序文件关联^{(configure, export, import App File Associations in Windows)}。这篇文章将向您展示如何在 Windows中将所有文件关联重置为默认值。^{(reset all File Associations to default)}

Set or Change File Associations & Extensions in Windows 11/10

Each file in your Windows operating system has an extension in its filename, eg. .txt, .doc, etc. These extensіons are uѕed to identіfy the program, with which, windows can open thіs file. You can set or change these file associations in your Windows 11 or Windows 10 OS. 

Change file associations in Windows 11/10

1] Using Settings

In later versions of Windows 10, you will have to do the following to change File Associations & Extensions:

1. Open Windows 10 Settings
2. Select Apps
3. Click Default apps
4. Scroll down and click on the blue Choose default apps by file type link.
5. Make your changes here.

You can even choose default apps by file type or protocol and set defaults by the app.

To choose default apps by file type in Windows 11, do the following:

• Press Win+I to open Windows Settings.
• Go to Apps > Default apps.
• Click the Choose defaults by file type option.
• Select a file type or extension.
• Choose an app you want to set as default.

TIP: This post will help you if you cannot associate a File Type with a Program.

2] Using File Properties

You can also right-click the file whose association you want to change > Properties > General tab > Type Of File > Change > Choose a program from the list or recommended or other programs or else click Browse to select one.

3] Via File Explorer

Select the file in Explorer, right-click on it, select Open with, and choose the program or select Choose another app as required.

4] Using Control Panel

To set File Associations in Windows 10/8/7 using Control Panel:

1. Open Control Panel
2. Click Control Panel Home
3. Select Default Programs
4. Click Set Associations
5. Select a file type in the list and click Change Program.

You will be displayed a list of Programs along with a Description and the Current Default. You can click on the Change program to set or change the current default programs.

5] Using freeware Types

If you wish, you can also set, reset, change File Associations & extensions easily with this freeware.

Types is a free and lightweight configuration utility for Windows that allows you to edit program associations, icons, context menus and other properties of various file types displayed in Windows Explorer.

It is a worthwhile replacement for the inbuilt Windows file type utility.

Read: How to remove File Type Associations using Registry Editor

File association fix Windows

If you wish to fix file associations easily, you may want to check out our freeware File Association Fixer. Go here if you are unable to change the Default Program Extension. This post will help you fix broken EXE file associations.

You can also configure, export, import App File Associations in Windows using Settings and DISM Tool. This post will show you how to reset all File Associations to default in Windows.

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