.NET Framework System Requirements

.NET Framework System Requirements

.NET Framework 4.5

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.

Hardware requirements

Processor	1 GHz
RAM	512 MB
Disk space (minimum)
32-bit	850 MB
64-bit	2 GB

Supported client operating systems

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.

Supported server operating systems

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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.