桌面上的 Windows 10 有大量可用的应用程序。几乎^(Almost)所有类型的软件都可用于Windows 11/10。即使您想创建一个复制和粘贴的快捷方式，您也有一个免费软件可以自动为您完成。这为用户提供了多种程序选择来执行他们不同类型的文件。

有些人希望HTML或PHP文件可以用 Visual Studio Code打开，但不能用记事本打开——记事本^{(Notepad –)}是打开此类文件的默认编辑器。或者，有些人更喜欢VLC 媒体播放器^{(VLC Media Player)}来打开他们的MKV文件，而不是内置的电影和电视应用程序（在某些地区的电影^(Films)和电视）。Windows允许他们像这样做出自己的选择，但是当用户执行功能更新时，这些设置往往会丢失，并且Windows会将所有内容重置为默认值。

因此，今天我们将尝试创建这些配置设置的备份，并学习如何恢复它，以便将所有设置恢复到更新前的状态。

^{(Reset Default App Associations)}通过设置^(Settings)重置默认应用关联

视窗 11

要重置默认应用程序关联 Windows 11^{(Reset Default App Associations Windows 11)}，请打开Settings > Apps > Default应用程序并向下滚动，直到看到 3 个设置，您可以在其中进行必要的操作。

视窗 10

在Windows 10中，打开Settings > Default应用程序，您可以在那里进行更改。

^(Export)在Windows 11/10导出和导入默认应用关联^{(Import Default App Associations)}

我们始终建议 创建一个系统还原点 ，以便在发生此类错误时，您可以回滚到计算机以前已知的稳定状态。

使用命令提示符^{(Command Prompt)}导出配置

首先，首先打开具有管理员级别权限的命令提示符^{(Command Prompt with Administrator level privileges)}。为此，请按 WINKEY + X 按钮组合或右键单击开始^(Start)按钮并单击命令提示符（管理员）。^{(Command Prompt (Admin).)} 对于 您收到的UAC或用户帐户控制^{(User Account Control)}提示，单击^(Click)是。^(Yes)

现在，输入以下命令并按 Enter。

dism /online /Export-DefaultAppAssociations:"%UserProfile%\Desktop\DefaultApplicationAssociations.xml"

这将在您的桌面上创建一个名为 DefaultApplicationAssociations.xml 的文件。^{(DefaultApplicationAssociations.xml )}

使用记事本^(Notepad)或任何类似的编辑器（如Visual Studio Code或Sublime Text ）打开它后，您将看到类似的文件类型及其与程序的关联。

您可以随时使用此文件恢复您的配置。因此，备份此文件是明智之举。

重新启动^(Reboot)计算机以使更改生效。

相关^(Related)：如何在 Windows 11/10中配置、导出、导入文件关联。^{(Configure, Export, Import File Associations)}

使用命令提示符^{(Command Prompt)}导入配置

再次^(Again)打开具有管理员^{(Administrator)}级别权限的命令提示符窗口。^{(Command Prompt Window)}

现在，输入以下命令并按 Enter。

dism /online /Import-DefaultAppAssociations:"%UserProfile%\Desktop\DefaultApplicationAssociations.xml"

现在，确保在命令中输入备份应用程序关联文件的路径。

成功完成后，会提示您， 操作成功完成。^{(The operation completed successfully.)}

重新启动^(Reboot)计算机以使更改生效。

阅读：^(Read:) 如何使用注册表编辑器删除文件类型关联

使用命令提示符^{(Command Prompt)}重置应用程序关联配置^{(Application Association Configuration)}

同样，在提升的命令提示符^{(Command Prompt)}中，键入以下命令并按 Enter。

dism /online /Remove-DefaultAppAssociations

成功完成后，会提示您， 操作成功完成。^{(The operation completed successfully.)}

重新启动^(Reboot)计算机以使更改生效。

希望这个技巧对你有用。^{(Hope this tip works for you.)}

How to Reset, Export, Import Default App Associations on Windows 11/10

Windows 10 on the desktop has a plethora of applications available. Almost every kind of software is availablе for Windows 11/10. Even if you want to make a shortcut to copy and pastе, you have a freeware to do it automatically for you. This gives the υsers a variety of choiceѕ of programs to execute their different kіnds оf files.

Some people expect HTML or PHP files to open with Visual Studio Code, but not with Notepad – which is the default editor to open such files. Or, some people prefer VLC Media Player to open their MKV files and not the inbuilt Movies and TV app (in some regions Films and TV). Windows lets them make their own choices like this, but when the user performs a feature update, these settings often tend to be lost, and Windows resets everything to its defaults.

So, today we will try to create a backup of these configuration settings and learn how to restore it just to regain all your settings back as they were before the update.

Reset Default App Associations via Settings

Windows 11

To Reset Default App Associations Windows 11, open Settings > Apps > Default apps and scroll down till you see the 3 settings where you can do the needful.

Windows 10

In Windows 10, open Settings > Default apps and you can make the changes there.

Export & Import Default App Associations on Windows 11/10

We always recommend creating a System Restore Point so that whenever such errors take place, you can just roll back to the previous known stable state of your computer.

Export the configuration with Command Prompt

First of all, start by opening a Command Prompt with Administrator level privileges. To do that, Press WINKEY + X button combo or right-click on the Start button and click on Command Prompt (Admin). Click on Yes for the UAC or User Account Control prompt that you get.

Now, type in the following command and hit Enter.

dism /online /Export-DefaultAppAssociations:"%UserProfile%\Desktop\DefaultApplicationAssociations.xml"

This will create a file named as DefaultApplicationAssociations.xml on your Desktop.

Upon opening it with Notepad or any similar editor like Visual Studio Code or Sublime Text, you will see alike to files types and their associations with the programs.

You can use this file to restore your configuration anytime. So taking a backup of this file is a smart thing to do.

Reboot your computer for the changes to take effect.

Related: How to Configure, Export, Import File Associations in Windows 11/10.

Import the configuration with Command Prompt

Again open a Command Prompt Window with Administrator level privileges.

Now, type in the following command and hit Enter.

dism /online /Import-DefaultAppAssociations:"%UserProfile%\Desktop\DefaultApplicationAssociations.xml"

Now, make sure that you enter the path of the backup application association file in the command.

Once completed successfully, it will give you a message saying, The operation completed successfully.

Reboot your computer for the changes to take effect.

Read: How to remove File Type Associations using Registry Editor

Reset the Application Association Configuration with Command Prompt

Again, in an elevated Command Prompt, type in the following command and hit Enter.

dism /online /Remove-DefaultAppAssociations

Once completed successfully, it will give you a message saying, The operation completed successfully.

Reboot your computer for the changes to take effect.

Hope this tip works for you.

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