通常，在Windows 10中，您可以右键单击打印机，上下文菜单将为您提供将该打印机设置为默认值的选项。一些 PC 用户报告说Windows 10中缺少此设置为默认打印机选项^{(Set as default printer option is missing)}。这篇文章提供了这个问题的解决方案。

设置^(Set)为默认打印机选项缺失

请注意，上面导入图像中的上下文菜单中缺少将打印机设置为默认值的选项。^{(Set printer as default)}

如果您遇到此问题，可以尝试以下我们推荐的任一解决方案来解决此问题。

1. ^{(Set Default Printer)}通过设置^(Settings)应用程序设置默认打印机
2. 使用 ChangeDefaultPrinter 应用程序

让我们看一下关于列出的每个解决方案所涉及的过程的描述。

1]通过设置^(Settings)应用程序设置默认打印机^{(Set Default Printer)}

在这里，您可以尝试通过“设置”应用设置默认打印机，^{(set the default printer via the Settings app)}并查看该选项是否可供您使用。

请记住，如果您选择了让 Windows 管理我的默认打印机^{( Let Windows manage my default printer)}选项，则需要先取消选择它，然后才能自行选择默认打印机。

2] 使用 ChangeDefaultPrinter 应用程序

在Windows 10中，Microsoft希望默认管理您的默认打印机，具体取决于您在该网络上打印的最后一台打印机。如果您不希望 Windows 为您选择此项，您可以从Github下载^(download)，如果您选择默认打印机，则使用ChangeDefaultPrinter应用程序自动禁用此行为。^{(ChangeDefaultPrinter)}该应用程序不需要安装，可以在受限用户上下文或管理员上下文中运行。

或者，您可以通过注册表手动禁用该行为。

请执行下列操作：

由于这是注册表操作，建议您备份注册表^{(back up the registry)} 或 创建系统还原点 作为必要的预防措施。完成后，您可以执行以下操作：

• 按Windows key + R调用“运行”对话框。
• 在“运行”对话框中，键入regedit并按Enter以打开注册表编辑器^{(Registry Editor)}。
• 导航或跳转到下面的注册表项路径：

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows

• 在该位置的右窗格中，双击LegacyDefaultPrinterMode条目以编辑其属性。

如果该键不存在，请右键单击右窗格中的空白区域，然后选择New > DWORD (32-bit) Value。将值名称重命名为LegacyDefaultPrinterMode并按 Enter。

• 双击^{(Double-click)}新值将其打开。
• 将值数据设置为1以手动选择默认打印机（根据以前的Windows版本），或设置为0（或禁用它）以使Windows能够更改默认值。
• 退出注册表编辑器。

更改立即生效，无需用户注销并重新登录或重新启动计算机。在此之后，您应该能够设置默认打印机。

希望这可以帮助！

相关帖子^{(Related post)}：默认打印机不断变化。

Set as default printer Context Menu item is missing in Windows 10

Τypically, in Windоws 10, you can right-click on a printer and the cоntext menu will provide you an option to set that printer as default. Some PC users are reporting that this Set as default printer option is missing in Windows 10. This post provides the solution to this issue.

Set as default printer option missing

Notice that the option to Set printer as default is missing from the context-menu in the lead-in image above.

If you’re faced with this issue, you can try either of our recommended solutions below to resolve the issue.

1. Set Default Printer via Settings app
2. Use the ChangeDefaultPrinter app

Let’s take a look at the description of the process involved concerning each of the listed solutions.

1] Set Default Printer via Settings app

Here, you can try to set the default printer via the Settings app and see if that option is available for you.

Keep in mind that If you have Let Windows manage my default printer option selected, you’ll need to deselect it before you can choose a default printer on your own.

2] Use the ChangeDefaultPrinter app

With Windows 10, Microsoft wants to default to managing your default printer, based on which printer you printed to last while on that network. If you don’t want Windows choosing this for you, you can download from Github, and use the ChangeDefaultPrinter app to disable this behavior automatically if you choose a default printer. The app does not need to be installed, and can run in a limited user’s context or an administrator context.

Alternatively, you can manually disable the behavior via the registry.

Do the following:

Since this is a registry operation, it is recommended that you back up the registry or create a system restore point as necessary precautionary measures. Once done, you can proceed as follows:

• Press Windows key + R to invoke the Run dialog.
• In the Run dialog box, type regedit and hit Enter to open Registry Editor.
• Navigate or jump to the registry key path below:

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows

• At the location, on the right pane, double-click the LegacyDefaultPrinterMode entry to edit its properties.

If the key is not present, right-click on the blank space on the right pane and then select New > DWORD (32-bit) Value. Rename the value name as LegacyDefaultPrinterMode and hit Enter.

• Double-click on the new value to open it.
• Set the Value data to 1 to manually choose the default printer (as per previous versions of Windows), or to 0 (or disable it) to enable Windows being able to change the default.
• Exit Registry Editor.

Changes take effect immediately, without the user logging out and back in or restarting the computer. After this, you should be able to set the default printer.

Hope this helps!

Related post: Default Printer keeps changing.

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