.NET 4.5 is an in-place upgrade for .NET 4.0. It replaces 4.0. If you need .NET 4.5.1, 4.5.2, 4.6, or 4.8, those are separate installers. How to Download the Official Offline Installer Warning: Do not download installers from random "DLL websites" or third-party archives. They often contain malware. Always use Microsoft's official channels.
Keep the 4.5 offline installer in your legacy toolkit, but use 4.8 for new deployments. Have a specific error code while trying to install? Leave a comment below (or check the Microsoft Event Viewer logs for the exact HRESULT). dotnet 4.5 offline installer
| Feature | Detail | | :--- | :--- | | | dotNetFx45_Full_x86_x64.exe | | File Size | ~49.2 MB (51,622,024 bytes) | | Supported OS | Windows 7 SP1, Windows 8, Windows Server 2008 R2 SP1, Windows Server 2012 | | Architecture | x86 (32-bit) and x64 (64-bit) combined | | Prerequisites | Windows Update KB2919355 (on older Windows 8/7 systems) | How to Download the Official Offline Installer Warning:
dotNetFx45_Full_x86_x64.exe /quiet /norestart Or for a passive (visible but non-interactive) install: Keep the 4
However, for 99% of users today, do not install 4.5 directly. Download the instead. It includes everything from 4.5.2, 4.6, and 4.7, and is actively supported through 2026+.