title: Error when installing windows SDK 7.1
body: <p>I've run into an error when installing the Windows SDK that I've seen posted around the Internet, but none of the solutions are working for me. Here is the log I'm getting</p>
  
  <pre><code>9:43:37 AM Monday, October 14, 2013: SFX C:\Program Files\Microsoft SDKs\Windows\v7.1\Setup\SFX\vcredist_x64.exe installation started with log file C:\Users\clarkbd\AppData\Local\Temp\Microsoft Windows SDK for Windows 7_c3c42538-8a3e-439d-be39-aee3078ca098_SFX.log
  9:43:43 AM Monday, October 14, 2013: C:\Program Files\Microsoft SDKs\Windows\v7.1\Setup\SFX\vcredist_x64.exe installation failed with return code 1603
  9:43:53 AM Monday, October 14, 2013: [SDKSetup:Error] Config_Products_Install: Installation of Product Microsoft Windows SDK for Windows 7 (failed): Please refer to Samples\Setup\HTML\ConfigDetails.htm document for further information. Stack:    at SDKSetup.Product.ConfigureRelatedSfx()    at SDKSetup.Product.ConfigureNewProduct(ManualResetEvent CancelEvent)
  9:43:53 AM Monday, October 14, 2013: [SDKSetup:Info] Config_Products_InstallNew: End installation of new product: Microsoft Windows SDK for Windows 7
  9:43:53 AM Monday, October 14, 2013: [SDKSetup:Error] Config_Products_Install: Windows SDK Setup (failed): Installation of the "Microsoft Windows SDK for Windows 7" product has reported the following error: Please refer to Samples\Setup\HTML\ConfigDetails.htm document for further information. Stack:    at SDKSetup.Product.ConfigureNewProduct(ManualResetEvent CancelEvent)      at SDKSetup.Product.SetupProduct(TaskMode taskMode, ManualResetEvent CancelEvent)       at SDKSetup.ProductCollection.SetupProducts(TaskMode taskMode, DownloadManager downloadManager, ManualResetEvent cancelEvent)       at SDKSetup.ConfigProducts.DoCurrentTask(TaskMode Task)
  </code></pre>
  
  <p>When I try to run vcredist_x64 separately, I get this error:</p>
  
  <pre><code>MSI (s) (80:5C) [09:51:50:971]: Product: Microsoft Visual C++ 2010  x64 Redistributable - 10.0.30319 -- A later version of Microsoft Visual C++ 2010  x64 Redistributable - 10.0.30319 is already installed.
  </code></pre>
  
  <p>Now, as per every solution I've read about this online, I'd uninstall the redistributable and continue with the installation. The problem is that I don't have any VC++ 2010 redistributables installed (only 2005 and 2008). The only thing besides the main program is something called <code>Microsoft Visual Studio 2010 Express Prerequisites x64 - ENU</code>. Uninstalling this has no effect on the errors I receive. There's something on my computer that's telling the SDK I have this redist installed, but I'm not sure what. Can anyone shed some light on this for me?</p>
  
  <p>Edit: This problem persists even when I completely uninstall Visual C++ 2010. What else can I do to remove all traces of this software from my machine?</p>
  
  <p>Edit 2: After searching the registry a bit, I've found that NI installs its own visual c++ 2010 redistributable with one of its programs, but it isn't included in the "Add or Remove Programs" list. I've uninstalled this and hopefully the sdk will install properly.</p>
  
  <p>Edit 3: No luck, still getting the same error. I can find other 2010 redistributables in the registry, but trying to execute the uninstall string manually just tells me that I can only run it on installed packages. This would be much simpler if I knew how the vcredist finds currently installed redistributions.</p>