请问：win7右键单击文件，选择【打开方式】，选择【选择默认程序...】，打不开，请问，谢谢啊

我在网上找了好多，终于找到了，话不多说，按下面方法 *** 作，必解决你的问题--

把下面的复制到一文本文件，改扩展名为reg，保持，双击，即可解决你的问题！！

Windows Registry Editor Version 500

[HKEY_CLASSES_ROOT\Unknown]

"AlwaysShowExt"=""

"QueryClassStore"=""

"TypeOverlay"=""

[HKEY_CLASSES_ROOT\Unknown\DefaultIcon]

@=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,00,73,00,68,00,\

65,00,6c,00,6c,00,33,00,32,00,2e,00,64,00,6c,00,6c,00,2c,00,30,00,00,00

[HKEY_CLASSES_ROOT\Unknown\shell]

@="openas"

[HKEY_CLASSES_ROOT\Unknown\shell\openas]

"MultiSelectModel"="Single"

[HKEY_CLASSES_ROOT\Unknown\shell\openas\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,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,72,00,75,00,\

6e,00,64,00,6c,00,6c,00,33,00,32,00,2e,00,65,00,78,00,65,00,20,00,25,00,53,\

00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,00,5c,00,73,00,\

79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,68,00,65,00,6c,00,6c,\

00,33,00,32,00,2e,00,64,00,6c,00,6c,00,2c,00,4f,00,70,00,65,00,6e,00,41,00,\

73,00,5f,00,52,00,75,00,6e,00,44,00,4c,00,4c,00,20,00,25,00,31,00,00,00

"DelegateExecute"="{e44e9428-bdbc-4987-a099-40dc8fd255e7}"

[HKEY_CLASSES_ROOT\Unknown\shell\opendlg]

"LegacyDisable"=""

"MultiSelectModel"="Single"

[HKEY_CLASSES_ROOT\Unknown\shell\opendlg\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,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,72,00,75,00,\

6e,00,64,00,6c,00,6c,00,33,00,32,00,2e,00,65,00,78,00,65,00,20,00,25,00,53,\

00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,00,5c,00,73,00,\

79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,68,00,65,00,6c,00,6c,\

00,33,00,32,00,2e,00,64,00,6c,00,6c,00,2c,00,4f,00,70,00,65,00,6e,00,41,00,\

73,00,5f,00,52,00,75,00,6e,00,44,00,4c,00,4c,00,20,00,25,00,31,00,00,00

以视频文件为例

1、打开“设置”-“应用”

2、选择“默认应用”后，找到“视频播放器”

3、点击“视频播放器”默认应用后，即可修改默认播放器

其他文件方法相同

当你创建某一类型的文件时，右键点击后会d出一系列选项，选择打开方式，然后点“选择默认程序”，再选定你要的程序，如果没有的话点其他程序或右下角的浏览。点浏览后一般在桌面上浏览，选定程序后点最下面的打开。工作完成后再勾选左下角的“始终使用选择的程序打开这种文件”即可。

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