Download Microsoft .NET Framework 4.5 from Official Microsoft Download Center

The new Surface Laptop 3 back to back

New Surface Laptop 3

The perfect everyday laptop is now even faster

Person using Power BI Desktop

Power BI

Transform data into actionable insights with dashboards and reports

Microsoft .NET Framework 4.5

Important! Selecting a language below will dynamically change the complete page content to that language.

Select Language:
.NET Framework 4.5 is a highly compatible, in-place update to .NET Framework 4.