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.NET Framework 4.5

.NET Framework System Requirements

The tables in this topic provide the hardware, operating system, and software requirements for the .NET Framework 4.5 and its point releases (4.5.1 and 4.5.2). Development environments that enable you to develop applications for the .NET Framework have a separate set of requirements.

For download information and links, see Installing the .NET Framework 4.5, 4.5.1, and 4.5.2.

Processor

1 GHz

RAM

512 MB

Disk space (minimum)

      32-bit

850 MB

      64-bit

2 GB

Operating system

Supported editions

Additional information

Windows 8.1

32-bit and 64-bit

Includes the .NET Framework 4.5.1

Windows 8

32-bit and 64-bit

Includes the .NET Framework 4.5

Windows 7 SP1

32-bit and 64-bit

-

Windows Vista SP2

32-bit and 64-bit

-

Notes:

  • Windows 8 includes the .NET Framework 4.5, so you don't have to install it separately. Similarly, Windows 8.1 includes the .NET Framework 4.5.1.

  • The .NET Framework 4.5 is supported on the Windows Preinstallation Environment (Windows PE). Not all features are supported on Windows PE.

  • For all platforms, we recommend that you upgrade to the latest Windows Service Pack and critical updates available from the Windows Update website to ensure the best compatibility and security.

  • On 64-bit operating systems, the .NET Framework supports both WOW64 (32-bit processing on a 64-bit machine) and native 64-bit processing.

Operating system

Supported editions

Additional information

Windows Server 2012 R2

64-bit

Includes the .NET Framework 4.5.1

Windows Server 2012 (64-bit edition)

64-bit

Includes the .NET Framework 4.5

Windows Server 2008 R2 SP1

64-bit

The .NET Framework is supported in the Server Core Role with SP1 or later, but isn't supported on Windows Server 2008 R2 for Itanium-Based Systems.

Windows Server 2008 SP2

32-bit and 64-bit

The .NET Framework is not supported in the Server Core Role.

Notes:

  • Windows Server 2012 includes the .NET Framework 4.5, so you don't have to install it separately. Similarly, Windows Server 2012 R2 includes the .NET Framework 4.5.1.

  • For all platforms, we recommend that you upgrade to the latest Windows Service Pack and critical updates available from the Windows Update website to ensure the best compatibility and security. Installation of the latest Windows Service Pack may be required on some operating systems.

  • On 64-bit operating systems, the .NET Framework supports both WOW64 (32-bit processing on a 64-bit machine) and native 64-bit processing.