c2rintl.en-us.dll is a language-specific file used by Microsoft Office programs. The location of this file may vary depending on the version of Office installed on your computer. However, typically the file is located in the following paths:

For Office 2019 and 365: C:\Program Files\Microsoft Office\root\Office16\1033

For Office 2016: C:\Program Files\Microsoft Office\Office16\1033

For Office 2013: C:\Program Files\Microsoft Office\Office15\1033

For Office 2010: C:\Program Files\Microsoft Office\Office14\1033

For Office 2007: C:\Program Files\Microsoft Office\Office12\1033\

Please note that the "1033" code may vary depending on the language version of Office installed on your computer.

c2rintl.en-us.dll文件安装方法：

一、如果您的系统提示“找不到c2rintl.en-us.dll”或“c2rintl.en-us.dll缺失” 或者“c2rintl.en-us.dll错误”等等，可能会导致某些软件和游戏等程序无法正常启动运行，并且导致电脑系统弹窗报错，此刻不要慌你只要在本站下载到该DLL文件并且在电脑上正确地重新安装mfc140.dl到Windows系统文件夹下载。

二、直接拷贝该文件到系统目录里：
1、Windows 95/98/Me系统，将c2rintl.en-us.dll复制到C:\Windows\System目录下。
2、Windows NT/2000系统，将c2rintl.en-us.dll复制到C:\WINNT\System32目录下。
3、Windows XP/WIN7/win10系统(64位系统对应64位dll文件，32位系统对应32位dll文件)，将c2rintl.en-us.dll复制到C:\Windows\System32目录下。 

4、如果您的系统是64位的请将32位的dll文件复制到C:\Windows\SysWOW64目录下。

三、然后打开 “开始-运行-输入regsvr32 c2rintl.en-us.dll” 或 “按win＋R键，输入regsvr32 c2rintl.en-us.dlll”回车即可解决错误提示！