打开方式-选择其他应用-该文件没有与之关联的应用来执行该操作。请安装应用，若已经安装应用，请在“默认应用设置”页面中创建关联

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久违添加个index图

打开方式-选择其他应用-该文件没有与之关联的应用来执行该操作。请安装应用，若已经安装应用，请在“默认应用设置”页面中创建关联。

问题

鼠标右键点击任何文件打开方式-选择其他应用报错该文件没有与之关联的应用来执行该操作。请安装应用，若已经安装应用，请在“默认应用设置”页面中创建关联。。

error

解决

在csdn上找的，没想到啊。解决方案

修改注册表有风险，最好先备份，并清楚自己在做什么，如果不知道下面什么意思就去问chatgpt。

把下面两段分别写到txt文件中，然后把后缀改为reg。运行。

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Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Unknown\shell\openas]
@=hex(2):40,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,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,00,2d,00,35,\
  00,33,00,37,00,36,00,00,00
"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,00,4f,00,70,00,\
  65,00,6e,00,57,00,69,00,74,00,68,00,2e,00,65,00,78,00,65,00,20,00,22,00,25,\
  00,31,00,22,00,00,00
"DelegateExecute"="{e44e9428-bdbc-4987-a099-40dc8fd255e7}"

解释：Windows Registry Editor Version 5.00不用说，都是英语。

HKEY_CLASSES_ROOT\Unknown\shell\openas注册表位置，@表示默认字符串值，hex(2) 表示表示这是一个 Unicode 字符串类型的值。后面的是十六位字符串，比如第二串翻译成ASCII码就是%SystemRoot%\system32\OpenWith.exe "%1"，这是执行文件的路径和其参数。

MultiSelectModel：一个字符串值，将右键菜单中“打开方式”选项的多选模式设置为“Single”，表示只能选中一个文件进行操作。

DelegateExecute 是 Windows 注册表中一个用于文件关联的键名（键值）。当该键存在时，它会指定一个 CLSID（类标识符），该 CLSID 的值将会被用于执行与该文件关联的操作，而不是使用默认程序。

改后注册表的长相

下面的注册表文件也类似

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Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Unknown\shell\OpenWithSetDefaultOn]
"MultiSelectModel"="Single"
"ProgrammaticAccessOnly"=""

[HKEY_CLASSES_ROOT\Unknown\shell\OpenWithSetDefaultOn\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,00,4f,00,70,00,\
  65,00,6e,00,57,00,69,00,74,00,68,00,2e,00,65,00,78,00,65,00,20,00,2d,00,6f,\
  00,76,00,65,00,72,00,72,00,69,00,64,00,65,00,20,00,22,00,25,00,31,00,22,00,\
  00,00
"DelegateExecute"="{e44e9428-bdbc-4987-a099-40dc8fd255e7}"

虽然我不懂注册表文件，不过上面两个应该可以合并为一个

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Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Unknown\shell\openas]
@=hex(2):40,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,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,00,2d,00,35,\
  00,33,00,37,00,36,00,00,00
"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,00,4f,00,70,00,\
  65,00,6e,00,57,00,69,00,74,00,68,00,2e,00,65,00,78,00,65,00,20,00,22,00,25,\
  00,31,00,22,00,00,00
"DelegateExecute"="{e44e9428-bdbc-4987-a099-40dc8fd255e7}"

[HKEY_CLASSES_ROOT\Unknown\shell\OpenWithSetDefaultOn]
"MultiSelectModel"="Single"
"ProgrammaticAccessOnly"=""

[HKEY_CLASSES_ROOT\Unknown\shell\OpenWithSetDefaultOn\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,00,4f,00,70,00,\
  65,00,6e,00,57,00,69,00,74,00,68,00,2e,00,65,00,78,00,65,00,20,00,2d,00,6f,\
  00,76,00,65,00,72,00,72,00,69,00,64,00,65,00,20,00,22,00,25,00,31,00,22,00,\
  00,00
"DelegateExecute"="{e44e9428-bdbc-4987-a099-40dc8fd255e7}"
IT

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