从Windows 10开始，Windows Photo Viewer不再负责打开带有图像的文件。您将获得一个新程序Microsoft Photos，它充满了性能和可靠性问题。
尽管Windows Photo Viewer已淘汰，但它仍然是用于在PC上查看数字照片的简单小程序。与Microsoft Photos不同，Windows Photo Viewer更快，可以更轻松地查看存储在本地媒体中的照片。
如果您是从Windows 7或Windows 8升级的，则可以轻松恢复Windows Photo Viewer-您只需要更改默认应用程序设置即可。
为此，请从“开始”菜单中选择“设置”>“应用程序”>“默认应用程序”，然后选择“ Windows Photo Viewer”以查看您的照片。
退出设置菜单后，可以使用Windows Photo Viewer查看照片。但这仅在您从Windows 7或8升级且未从头开始安装的情况下才有效。
如果您是从头开始安装Windows 10，则需要在Windows注册表中注册某些设置。
如何找回Windows Photo Viewer
要在全新安装Windows 10之后恢复Windows Photo Viewer，您需要将以下文本保存在“ .reg”文件中：
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\Applications\photoviewer.dll]
[HKEY_CLASSES_ROOT\Applications\photoviewer.dll\shell]
[HKEY_CLASSES_ROOT\Applications\photoviewer.dll\shell\open]
"MuiVerb"="@photoviewer.dll,-3043"
[HKEY_CLASSES_ROOT\Applications\photoviewer.dll\shell\open\command]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,72,00,75,00,\
6e,00,64,00,6c,00,6c,00,33,00,32,00,2e,00,65,00,78,00,65,00,20,00,22,00,25,\
00,50,00,72,00,6f,00,67,00,72,00,61,00,6d,00,46,00,69,00,6c,00,65,00,73,00,\
25,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,20,00,50,00,68,00,6f,\
00,74,00,6f,00,20,00,56,00,69,00,65,00,77,00,65,00,72,00,5c,00,50,00,68,00,\
6f,00,74,00,6f,00,56,00,69,00,65,00,77,00,65,00,72,00,2e,00,64,00,6c,00,6c,\
00,22,00,2c,00,20,00,49,00,6d,00,61,00,67,00,65,00,56,00,69,00,65,00,77,00,\
5f,00,46,00,75,00,6c,00,6c,00,73,00,63,00,72,00,65,00,65,00,6e,00,20,00,25,\
00,31,00,00,00
[HKEY_CLASSES_ROOT\Applications\photoviewer.dll\shell\open\DropTarget]
"Clsid"="{FFE2A43C-56B9-4bf5-9A79-CC6D4285608A}"
[HKEY_CLASSES_ROOT\Applications\photoviewer.dll\shell\print]
[HKEY_CLASSES_ROOT\Applications\photoviewer.dll\shell\print\command]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,72,00,75,00,\
6e,00,64,00,6c,00,6c,00,33,00,32,00,2e,00,65,00,78,00,65,00,20,00,22,00,25,\
00,50,00,72,00,6f,00,67,00,72,00,61,00,6d,00,46,00,69,00,6c,00,65,00,73,00,\
25,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,20,00,50,00,68,00,6f,\
00,74,00,6f,00,20,00,56,00,69,00,65,00,77,00,65,00,72,00,5c,00,50,00,68,00,\
6f,00,74,00,6f,00,56,00,69,00,65,00,77,00,65,00,72,00,2e,00,64,00,6c,00,6c,\
00,22,00,2c,00,20,00,49,00,6d,00,61,00,67,00,65,00,56,00,69,00,65,00,77,00,\
5f,00,46,00,75,00,6c,00,6c,00,73,00,63,00,72,00,65,00,65,00,6e,00,20,00,25,\
00,31,00,00,00
[HKEY_CLASSES_ROOT\Applications\photoviewer.dll\shell\print\DropTarget]
"Clsid"="{60fd46de-f830-4894-a628-6fa81bc0190d}"然后双击该文件以将其导入Windows注册表。使用某些设置，系统将要求您确认启动文件：
如果确认启动，您将看到UAC的窗口确认注册表编辑器的启动：
如果在此处回答是，那么您将看到添加文件中包含的数据的请求，到系统注册表：
确认后，您将收到有关成功添加数据的通知：
之后，您可以再次使用Windows Photo Viewer，但有一个问题-对于每种类型的图形文件，您都需要手动选择Windows Photo Viewer作为默认程序。
为此，右键单击所需的文件，从菜单中选择“打开方式”，然后选择“选择其他应用程序”。然后选择Windows Photo Viewer作为默认应用程序：
对于要使用Windows Photo Viewer查看的所有其他文件类型，都需要重复此操作。