方法一

新建或找到一个Word文件
右键单击这个文件
选择属性
点击“打开方式”后面的“更改”按钮
在“推荐的程序”或“其他程序”中找到Microsoft Word
再依次点击确定即可。

方法二（适用于安装了WPS的电脑）

在开始菜单中，找到WPS文件夹，点开
找到配制工具
取消勾选默认使用WPS打开Word,Excel,PowerPoint三项。
确定即可。

方法三（C# ）

 public static class RepairOffice{private static List<string> _HKCU_Del_Keys = new List<string>() {@"Software\Classes\.csv",@"Software\Classes\.dif",@"Software\Classes\.doc",@"Software\Classes\.docm",@"Software\Classes\.docx",@"Software\Classes\.dot",@"Software\Classes\.dotm",@"Software\Classes\.dotx",@"Software\Classes\.iqy",@"Software\Classes\.pdf\KWPS.PDF.9",@"Software\Classes\.pot",@"Software\Classes\.potm",@"Software\Classes\.potx",@"Software\Classes\.ppa",@"Software\Classes\.ppam",@"Software\Classes\.pps",@"Software\Classes\.ppsm",@"Software\Classes\.ppsx",@"Software\Classes\.ppt",@"Software\Classes\.pptm",@"Software\Classes\.pptx",@"Software\Classes\.rtf",@"Software\Classes\.sldm",@"Software\Classes\.sldx",@"Software\Classes\.slk",@"Software\Classes\.xla",@"Software\Classes\.xlam",@"Software\Classes\.xlk",@"Software\Classes\.xls",@"Software\Classes\.xlsb",@"Software\Classes\.xlsm",@"Software\Classes\.xlsx",@"Software\Classes\.xlt",@"Software\Classes\.xltm",@"Software\Classes\.xltx",@"Software\Classes\CLSID\{00020812-0000-0000-C000-000000000046}",@"Software\Classes\CLSID\{00020820-0000-0000-C000-000000000046}",@"Software\Classes\CLSID\{00020821-0000-0000-C000-000000000046}",@"Software\Classes\CLSID\{00020830-0000-0000-C000-000000000046}",@"Software\Classes\CLSID\{00020832-0000-0000-C000-000000000046}",@"Software\Classes\CLSID\{00020900-0000-0000-C000-000000000046}",@"Software\Classes\CLSID\{00020906-0000-0000-C000-000000000046}",@"Software\Classes\CLSID\{00020907-0000-0000-C000-000000000046}",@"Software\Classes\CLSID\{000209FE-0000-0000-C000-000000000046}",@"Software\Classes\CLSID\{000209FF-0000-0000-C000-000000000046}",@"Software\Classes\CLSID\{00024500-0000-0000-C000-000000000046}",@"Software\Classes\CLSID\{048EB43E-2059-422F-95E0-557DA96038AF}",@"Software\Classes\CLSID\{18A06B6B-2F3F-4E2B-A611-52BE631B2D22}",@"Software\Classes\CLSID\{3C18EAE4-BC25-4134-B7DF-1ECA1337DDDC}",@"Software\Classes\CLSID\{64818D10-4F9B-11CF-86EA-00AA00B929E8}",@"Software\Classes\CLSID\{64818D11-4F9B-11CF-86EA-00AA00B929E8}",@"Software\Classes\CLSID\{75D01070-1234-44E9-82F6-DB5B39A47C13}",@"Software\Classes\CLSID\{8A624388-AA27-43E0-89F8-2A12BFF7BCCD}",@"Software\Classes\CLSID\{912ABC52-36E2-4714-8E62-A8B73CA5E390}",@"Software\Classes\CLSID\{91493441-5A91-11CF-8700-00AA0060263B}",@"Software\Classes\CLSID\{CF4F55F4-8F87-4D47-80BB-5808164BB3F8}",@"Software\Classes\CLSID\{DC020317-E6E2-4A62-B9FA-B3EFE16626F4}",@"Software\Classes\CLSID\{F4754C9B-64F5-4B40-8AF4-679732AC0607}",@"Software\Classes\ET.Addin",@"Software\Classes\ET.AddInMacroEnabled",@"Software\Classes\ET.Backup",@"Software\Classes\ET.DIF",@"Software\Classes\ET.iqyfile",@"Software\Classes\ET.SLK",@"Software\Classes\ET.Xls.6",@"Software\Classes\ET.Xlsb.6",@"Software\Classes\ET.Xlsm.6",@"Software\Classes\ET.Xlsx.6",@"Software\Classes\ET.Xlt.6",@"Software\Classes\Excel.Addin",@"Software\Classes\Excel.Application",@"Software\Classes\Excel.Application.14",@"Software\Classes\Excel.CSV",@"Software\Classes\Excel.Sheet",@"Software\Classes\Excel.Sheet.12",@"Software\Classes\Excel.Sheet.8",@"Software\Classes\Excel.SheetBinaryMacroEnabled.12",@"Software\Classes\Excel.SheetMacroEnabled.12",@"Software\Classes\Excel.Template",@"Software\Classes\Excel.Template.8",@"Software\Classes\Excel.TemplateMacroEnabled",@"Software\Classes\Excel.XLL\DefaultIcon",@"Software\Classes\ExcelChart",@"Software\Classes\ExcelMacrosheet",@"Software\Classes\ExcelWorksheet",@"Software\Classes\ksobak.pdf",@"Software\Classes\KWPS.PDF.9",@"Software\Classes\MSPowerPoint",@"Software\Classes\MSPowerPointSho",@"Software\Classes\PowerPoint.Application",@"Software\Classes\PowerPoint.Application.14",@"Software\Classes\PowerPoint.Show",@"Software\Classes\PowerPoint.Show.12",@"Software\Classes\PowerPoint.Show.8",@"Software\Classes\PowerPoint.ShowMacroEnabled.12",@"Software\Classes\PowerPoint.SlideShow.12",@"Software\Classes\PowerPoint.SlideShow.8",@"Software\Classes\PowerPoint.SlideShowMacroEnabled.12",@"Software\Classes\PowerPoint.Template.12",@"Software\Classes\PowerPoint.Template.8",@"Software\Classes\PowerPoint.TemplateMacroEnabled.12",@"Software\Classes\SystemFileAssociations\.dif",@"Software\Classes\SystemFileAssociations\.doc",@"Software\Classes\SystemFileAssociations\.docm",@"Software\Classes\SystemFileAssociations\.dot",@"Software\Classes\SystemFileAssociations\.dotm",@"Software\Classes\SystemFileAssociations\.dotx",@"Software\Classes\SystemFileAssociations\.iqy",@"Software\Classes\SystemFileAssociations\.pot",@"Software\Classes\SystemFileAssociations\.potm",@"Software\Classes\SystemFileAssociations\.potx",@"Software\Classes\SystemFileAssociations\.ppsm",@"Software\Classes\SystemFileAssociations\.ppsx",@"Software\Classes\SystemFileAssociations\.ppt",@"Software\Classes\SystemFileAssociations\.pptm",@"Software\Classes\SystemFileAssociations\.pptx",@"Software\Classes\SystemFileAssociations\.rtf",@"Software\Classes\SystemFileAssociations\.sldm",@"Software\Classes\SystemFileAssociations\.sldx",@"Software\Classes\SystemFileAssociations\.xla",@"Software\Classes\SystemFileAssociations\.xls",@"Software\Classes\SystemFileAssociations\.xlsb",@"Software\Classes\SystemFileAssociations\.xlsm",@"Software\Classes\SystemFileAssociations\.xlsx",@"Software\Classes\SystemFileAssociations\.xlt",@"Software\Classes\Word.Application",@"Software\Classes\Word.Application.14",@"Software\Classes\Word.Document",@"Software\Classes\Word.Document.12",@"Software\Classes\Word.Document.8",@"Software\Classes\Word.DocumentMacroEnabled.12",@"Software\Classes\Word.RTF.8",@"Software\Classes\Word.Template.12",@"Software\Classes\Word.Template.8",@"Software\Classes\Word.TemplateMacroEnabled.12",@"Software\Classes\WordDocument",@"Software\Classes\Wow6432Node\CLSID\{00020812-0000-0000-C000-000000000046}",@"Software\Classes\Wow6432Node\CLSID\{00020820-0000-0000-C000-000000000046}",@"Software\Classes\Wow6432Node\CLSID\{00020821-0000-0000-C000-000000000046}",@"Software\Classes\Wow6432Node\CLSID\{00020830-0000-0000-C000-000000000046}",@"Software\Classes\Wow6432Node\CLSID\{00020832-0000-0000-C000-000000000046}",@"Software\Classes\Wow6432Node\CLSID\{00020900-0000-0000-C000-000000000046}",@"Software\Classes\Wow6432Node\CLSID\{00020906-0000-0000-C000-000000000046}",@"Software\Classes\Wow6432Node\CLSID\{00020907-0000-0000-C000-000000000046}",@"Software\Classes\Wow6432Node\CLSID\{000209FE-0000-0000-C000-000000000046}",@"Software\Classes\Wow6432Node\CLSID\{000209FF-0000-0000-C000-000000000046}",@"Software\Classes\Wow6432Node\CLSID\{00024500-0000-0000-C000-000000000046}",@"Software\Classes\Wow6432Node\CLSID\{048EB43E-2059-422F-95E0-557DA96038AF}",@"Software\Classes\Wow6432Node\CLSID\{18A06B6B-2F3F-4E2B-A611-52BE631B2D22}",@"Software\Classes\Wow6432Node\CLSID\{3C18EAE4-BC25-4134-B7DF-1ECA1337DDDC}",@"Software\Classes\Wow6432Node\CLSID\{64818D10-4F9B-11CF-86EA-00AA00B929E8}",@"Software\Classes\Wow6432Node\CLSID\{64818D11-4F9B-11CF-86EA-00AA00B929E8}",@"Software\Classes\Wow6432Node\CLSID\{75D01070-1234-44E9-82F6-DB5B39A47C13}",@"Software\Classes\Wow6432Node\CLSID\{8A624388-AA27-43E0-89F8-2A12BFF7BCCD}",@"Software\Classes\Wow6432Node\CLSID\{912ABC52-36E2-4714-8E62-A8B73CA5E390}",@"Software\Classes\Wow6432Node\CLSID\{91493441-5A91-11CF-8700-00AA0060263B}",@"Software\Classes\Wow6432Node\CLSID\{AA14F9C9-62B5-4637-8AC4-8F25BF29D5A7}\DefaultIcon",@"Software\Classes\Wow6432Node\CLSID\{AA14F9C9-62B5-4637-8AC4-8F25BF29D5A7}\LocalServer32",@"Software\Classes\Wow6432Node\CLSID\{CF4F55F4-8F87-4D47-80BB-5808164BB3F8}",@"Software\Classes\Wow6432Node\CLSID\{DC020317-E6E2-4A62-B9FA-B3EFE16626F4}",@"Software\Classes\Wow6432Node\CLSID\{F4754C9B-64F5-4B40-8AF4-679732AC0607}",@"Software\Classes\WPP.Addin.12",@"Software\Classes\WPP.Addin.8",@"Software\Classes\WPP.POT.6",@"Software\Classes\WPP.POTM.6",@"Software\Classes\WPP.POTX.6",@"Software\Classes\WPP.PPSM.6",@"Software\Classes\WPP.PPSX.6",@"Software\Classes\WPP.PPT.6",@"Software\Classes\WPP.PPTM.6",@"Software\Classes\WPP.PPTX.6",@"Software\Classes\WPP.SLDM.6",@"Software\Classes\WPP.SLDX.6",@"Software\Classes\WPS.Doc.6",@"Software\Classes\WPS.Docm.6",@"Software\Classes\WPS.Docx.6",@"Software\Classes\WPS.Dot.6",@"Software\Classes\WPS.Dotm.6",@"Software\Classes\WPS.Dotx.6",@"Software\Classes\WPS.RTF.6",};/// <summary>/// 修复Office打开方式/// </summary>public static void Repair(){DeleteReg();}private static void DeleteReg(){foreach (var item in _HKCU_Del_Keys){try{Registry.CurrentUser.DeleteSubKeyTree(item, true);}catch { }}}       }

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修改Office文件的默认打开方式（含C#代码）

方法一

方法二（适用于安装了WPS的电脑）

方法三（C# ）

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