title: are multiple version of the Windows SDK necessary?
body: <p>I was just looking through my installed programs to free up some space, and I noticed that there are two versions of the Windows SDK, and the ASP.NET SDK. Are these 32-bit and 64-bit? The package name does not indicate that is the case, so I am wondering if I need both versions of these packages installed?</p>
  <p><a href="https://i.stack.imgur.com/BGhQ6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/BGhQ6.png" alt="add/remove programs screenshot" /></a></p>
  <p>As you can see in the image, <code>Windows SDK 10.1.10586.15</code> and <code>Windows SDK 10.0.26624</code>, and <code>ASP.NET RC1 Update 1 1.0.20204.0</code> and <code>ASP.NET RC1 Update 1 10.0.11123.0</code>. Since both packages were installed on the same date, I <em>assume</em> that they are 32-bit and 64-bit, but I would also <em>assume</em> that they would be named such, if that were the case.</p>
  <p>These packages are being used for Windows 10 Universal app development in Visual Studio 2015.</p>