All versions of the Microsoft .NET Framework

Sometimes you download a software & find that its not working in your Computer. Many times software gives an error that Microsoft .NET Framework needs to be installed or sometimes the developer of software mentions that you need Microsoft .NET Framework installed in your PC to be able to use the software.

.NET Framework creates the required software environment to provide the appropriate runtime requirements to the software. In simple terms some softwares runs only if your PC has Microsoft .NET Framework installed.

There are many .NET Framework versions available. Some are included in some Windows OS by default.

Released versions of .NET Framework is:
• .NET Framework 1.0
• .NET Framework 1.1 (pre-installed in Windows Server 2003)
• .NET Framework 2.0
• .NET Framework 3.0 (pre-installed in Windows Vista & Server 2008)
• .NET Framework 3.5 (pre-installed in Windows 7 & Server 2008 R2)
• .NET Framework 4.0

So below is the official Microsoft download links of each version of .NET Framework:
1. Microsoft .NET Framework 1.0 / SP3
2. Microsoft .NET Framework 1.1 / SP1
3. Microsoft .NET Framework 2.0 x86 / SP1 / SP2
4. Microsoft .NET Framework 2.0 x64 / SP1 / SP2
5. Microsoft .NET Framework 3.0 x86
6. Microsoft .NET Framework 3.0 x64
7. Microsoft .NET Framework 3.5 / SP1
8. Microsoft .NET Framework 4.0 for x86, x64 & ia64

.NET Framework can be installed in Windows NT, 98, Me, 2000, XP, Server 2003, Vista, Server 2008 and 7.