Developers sometimes assume that most people have those files, however if you don't download very often and don't use a lot of software other than what came with your computer - you may need an additional support file here and there. Microsoft releases new "Run-time" files every now and then, they allow software developers to make use of the latest technology when creating new software. In order for YOU to use these programs, you need to update your Windows system with these files.
This package includes: ASycFilt.dll, ComCat.dll, MSVBVM60.dll, OLEAut32.dll, OLEPro32.dll, STDOLE2.tlb, ADVPack.dll, W95Inf16.dll, W95Inf32.dll, VBRun60.infMore Info | Download Visual Basic 6.0 Run-Time Files
This package includes: Msvbvm50.dll, Oleaut32.dll, Olepro32.dll, Stdole2.tlb, Asycfilt.dll, Comcat.dllMore Info | Download Visual Basic 5.0 Run-Time Files
VB4 Runtimes may still be required by some older products. If you receive an error that VB40032.DLL is missing, you need to download and install these. The package includes Vb40016.dll and Vb40032.dllMore Info | Download Visual Basic 4.0 Run-Time Files
Java is a programming language just like Visual basic, C etc. However, in order to run programs written in Java on a Windows computer, you need to install the latest support files, the Java Runtime Environment from Sun. You only need to install the JRE once, then you are ready to use any software that requires Java.More Info | Download Java Runtime Environment
Some program take advantage of Microsoft's .NET framework. You will need the .NET Runtimes in order to run those programs. The .NET Framework version 1.1 redistributable package includes everything you need to run applications developed using the .NET Framework.More Info | Download .NET Framework Version 1.1
The Microsoft .NET Framework version 2.0 (x86) redistributable package installs the .NET Framework runtime and associated files required to run applications developed to target the .NET Framework v2.0.More Info | Download .NET Framework Version 2.0
The Microsoft .NET Framework 3.0 is the new managed code programming model for WindowsMore Info | Download .NET Framework Version 3
.NET Framework 3.5 builds incrementally on the new features added in .NET Framework 3.0. For example, feature sets in Windows Workflow Foundation (WF), Windows Communication Foundation (WCF), Windows Presentation Foundation (WPF) and Windows CardSpace.More Info | Download .NET Framework Version 3.5
Microsoft C Runtime Library (Copy it into your Windows folder)More Info | Download msvcr71.dll
The Microsoft .NET Framework 4 redistributable package installs the .NET Framework runtime and associated files that are required to run and develop applications to target the .NET Framework 4.More Info | Download .NET Framwork 4
.NET Framework 4.5 is a highly compatible, in-place update to .NET Framework 4.More Info | Download .NET Framework 4.5
Adobe AIR runtime enables you to have your favorite web applications with you all the time. Since applications built for Adobe AIR run on your desktop computer without a web browser, they provide all the convenience of a desktop applicationMore Info | Download Adobe AIR
For all other missing files , check the support.microsoft.com web site.