在Windows电脑上运行游戏或者应用程序，提示确实什么.DLL文件，大多是没有安装VC运行库的问题。
VC运行库，是计算机上运行使用 Visual C++ 开发的应用程序所需的 Visual C++ 库的运行时组件。
简单的说很多开发程序会调用VC运行库里面的组件，缺少了会导致程序无法运行。
Visual C++ 2005 Redistributables can be downloaded from the below locations
x86
8.0.50727.42: https://www.microsoft.com/en-us/download/details.aspx?id=3387
8.0.50727.762: https://www.microsoft.com/en-us/download/details.aspx?id=5638
8.0.50727.4053: http://download.windowsupdate.com/msdownload/update/software/secu/2009/07/atl80sp1-kb973923-x86_4d50cba4f1476d9e9320d5c0dc2be56259a98303.exe
8.0.50727.5672: http://download.windowsupdate.com/msdownload/update/software/secu/2011/06/vcredist_x86_b8fab0bb7f62a24ddfe77b19cd9a1451abd7b847.exe
8.0.56336: https://download.microsoft.com/download/e/1/c/e1c773de-73ba-494a-a5ba-f24906ecf088/vcredist_x86.exe
8.0.59193: https://www.microsoft.com/en-us/download/details.aspx?id=14431
8.0.61001: https://www.microsoft.com/en-us/download/details.aspx?id=26347
x64
8.0.50727.42: http://www.microsoft.com/en-us/download/details.aspx?id=21254
8.0.50727.762: https://www.microsoft.com/en-us/download/details.aspx?id=18471
8.0.50727.4053: http://download.windowsupdate.com/msdownload/update/software/secu/2009/07/atl80sp1-kb973923-x64_ea6854e4d11bbce45f359c55b4f6654017066bab.exe
8.0.56336: https://download.microsoft.com/download/d/4/1/d41aca8a-faa5-49a7-a5f2-ea0aa4587da0/vcredist_x64.exe
8.0.59192: https://www.microsoft.com/en-us/download/details.aspx?id=14431
8.0.61000: https://www.microsoft.com/en-us/download/details.aspx?id=26347
Visual C++ 2008 Redistributables can be downloaded from the below locations
x86
9.0.21022: https://www.microsoft.com/en-us/download/details.aspx?id=29
9.0.21022.218: https://www.microsoft.com/en-us/download/details.aspx?id=10430
9.0.30411.0: https://www.microsoft.com/en-us/download/details.aspx?id=10015
9.0.30729.17: https://www.microsoft.com/en-us/download/details.aspx?id=5582
9.0.30729.4148: https://www.microsoft.com/en-us/download/details.aspx?id=11895
9.0.30729.5677: https://download.microsoft.com/download/5/D/8/5D8C65CB-C849-4025-8E95-C3966CAFD8AE/vcredist_x86.exe
9.0.30729.6161: https://www.microsoft.com/en-us/download/details.aspx?id=26368
x64
9.0.21022: https://www.microsoft.com/en-us/download/details.aspx?id=15336
9.0.21022.218: https://www.microsoft.com/en-us/download/details.aspx?id=10430
9.0.30411.0: https://www.microsoft.com/en-us/download/details.aspx?id=16771
9.0.30729.17: https://www.microsoft.com/en-us/download/details.aspx?id=2092
9.0.30729.4148: https://www.microsoft.com/en-us/download/details.aspx?id=11895
9.0.30729.5677: https://download.microsoft.com/download/5/D/8/5D8C65CB-C849-4025-8E95-C3966CAFD8AE/vcredist_x64.exe
9.0.30729.6161: https://www.microsoft.com/en-us/download/details.aspx?id=26368
Visual C++ 2010 Redistributables can be downloaded from the below locations
x86
10.0.30319: https://www.microsoft.com/en-us/download/details.aspx?id=5555
10.0.30319.415: https://www.microsoft.com/en-us/download/details.aspx?id=21576
10.0.40219: https://www.microsoft.com/en-us/download/details.aspx?id=8328
10.0.40219.325: https://www.microsoft.com/en-us/download/details.aspx?id=26999
x64
10.0.30319: https://www.microsoft.com/en-us/download/details.aspx?id=14632
10.0.30319.415: https://www.microsoft.com/en-us/download/details.aspx?id=21576
10.0.40219: https://www.microsoft.com/en-us/download/details.aspx?id=13523
10.0.40219.325: https://www.microsoft.com/en-us/download/details.aspx?id=26999
Visual C++ 2012 Redistributables can be downloaded from the below locations
x86
11.0.61030: https://www.microsoft.com/en-us/download/details.aspx?id=30679
x64
11.0.61030: https://www.microsoft.com/en-us/download/details.aspx?id=30679
Visual C++ 2013 Redistributables can be downloaded from the below locations
x86
12.0.30501.0: https://www.microsoft.com/en-us/download/details.aspx?id=40784
12.0.40649.5: https://support.microsoft.com/en-us/help/3138367/update-for-visual-c-2013-and-visual-c-redistributable-package
12.0.40660.0: https://support.microsoft.com/en-us/help/3179560/update-for-visual-c-2013-and-visual-c-redistributable-package
12.0.40664.0: https://support.microsoft.com/en-us/help/4032938/update-for-visual-c-2013-redistributable-package
x64
12.0.30501.0: https://www.microsoft.com/en-us/download/details.aspx?id=40784
12.0.40649.5: https://support.microsoft.com/en-us/help/3138367/update-for-visual-c-2013-and-visual-c-redistributable-package
12.0.40660.0: https://support.microsoft.com/en-us/help/3179560/update-for-visual-c-2013-and-visual-c-redistributable-package
12.0.40664.0: https://support.microsoft.com/en-us/help/4032938/update-for-visual-c-2013-redistributable-package
Visual C++ 2015 Redistributables can be downloaded from the below locations
x86
14.0.23506.0: http://download.microsoft.com/download/C/E/5/CE514EAE-78A8-4381-86E8-29108D78DBD4/VC_redist.x86.exe
14.0.23026.0: https://www.microsoft.com/en-us/download/details.aspx?id=48145
14.0.24123.0: https://www.microsoft.com/en-us/download/details.aspx?id=52685
14.0.24212.0: https://www.microsoft.com/en-us/download/details.aspx?id=53587
14.0.24215.1: https://download.microsoft.com/download/6/A/A/6AA4EDFF-645B-48C5-81CC-ED5963AEAD48/vc_redist.x86.exe
x64
14.0.23506.0: http://download.microsoft.com/download/C/E/5/CE514EAE-78A8-4381-86E8-29108D78DBD4/VC_redist.x64.exe
14.0.23026.0: https://www.microsoft.com/en-us/download/details.aspx?id=48145
14.0.24123.0: https://www.microsoft.com/en-us/download/details.aspx?id=52685
14.0.24212.0: https://www.microsoft.com/en-us/download/details.aspx?id=53587
14.0.24215.1: https://download.microsoft.com/download/6/A/A/6AA4EDFF-645B-48C5-81CC-ED5963AEAD48/vc_redist.x64.exe
Visual C++ 2017 Redistributables can be downloaded from the below locations
x86
14.11.25325.0: https://go.microsoft.com/fwlink/?LinkId=746571
14.10.25008.0: https://download.microsoft.com/download/7/a/6/7a68af9f-3761-4781-809b-b6df0f56d24c/vc_redist.x86.exe
14.10.25017.0: https://download.microsoft.com/download/1/f/e/1febbdb2-aded-4e14-9063-39fb17e88444/vc_redist.x86.exe
x64
14.11.25325.0: https://go.microsoft.com/fwlink/?LinkId=746572
14.10.25008.0: https://download.microsoft.com/download/8/9/d/89d195e1-1901-4036-9a75-fbe46443fc5a/vc_redist.x64.exe
14.10.25017.0: https://download.microsoft.com/download/3/b/f/3bf6e759-c555-4595-8973-86b7b4312927/vc_redist.x64.exe
