右键菜单的“打开方式—选择程序”功能不能使用解决方案

很多朋友右键打开一个文件，发现仅有几个默认的打开方式，选择打开方式却提示“决绝访问”类似字样，解决此问题的办法是，将下面虚线之间的内容复制到文本文 档中，保存为"XXXX.reg”，文件名可自己取，叫什么没关系，保存后双击执行，会看到“是否将XXXX.reg中的信息添加进注册表?”，点确认。OK，你现在选择一个文件，看看右键选择打开方式还能不能用！！！

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Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Unknown]
"AlwaysShowExt"=""
"QueryClassStore"=""

[HKEY_CLASSES_ROOT\Unknown\shell]
@="openas"

[HKEY_CLASSES_ROOT\Unknown\shell\openas]

[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

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