dotNetFx45_Full_x86_x64.exe /log C:\temp\dotnet45.log /quiet Check %temp%\Microsoft .NET Framework 4.5 Setup.htm after completion for status. Q: Is .NET 4.5 still safe to use in 2025? A: Security-wise, Microsoft ended mainstream support for .NET 4.5 on January 12, 2016. Extended support ended in 2021. However, if you are running it on an isolated Windows 7 machine (no internet), it is safe. For online machines, consider upgrading to .NET 4.8 (which still receives security updates on Windows 7 until Windows 7 ESU ends). Q: Can I install .NET 4.5 on Windows 7 64-bit without internet? A: Absolutely. That is the entire point of the offline installer. Download the 68 MB file on a connected PC, copy it via USB, then run it on the offline Windows 7 machine. Q: Why does the installer say "This version is already installed"? A: Windows 8 and 10 come with .NET 4.5 pre-installed. This article is specifically for Windows 7. If you see that on Windows 7, you have a previous version (e.g., 4.0). Uninstall via Control Panel and retry. Q: My game/software requires .NET 4.5.2 but the error mentions 4.5. Where do I get 4.5.2? A: The direct Microsoft link for .NET 4.5.2 offline (x64) is: download.microsoft.com/download/7/6/A/76ADBC71-5C7A-4EF0-8B9B-411003257642/NDP452-KB2901954-x86-x64-AllOS-ENU.exe Conclusion The Microsoft .NET Framework 4.5 offline installer for Windows 7 64 bit remains a critical utility for millions of legacy systems. Whether you are a gamer trying to launch an older title, a small business running custom ERP software, or an IT professional maintaining industrial control PCs, having this 68 MB executable on a USB drive can save hours of frustration.
| Version | Offline Installer Size | In-Place Upgrade? | Best for Windows 7 64-bit? | | :--- | :--- | :--- | :--- | | .NET 4.5 | 68 MB | Base install | Yes (safe for all older apps) | | .NET 4.5.1 | 67 MB | Updates 4.5 | If your app specifically demands it | | .NET 4.5.2 | 66 MB | Updates 4.5.1 | Most stable for legacy 7 | dotNetFx45_Full_x86_x64
| Feature | Web Installer | Offline Installer | | :--- | :--- | :--- | | | Yes (constant connection) | No (only for download once) | | File Size | ~1 MB | ~50-68 MB | | Reliability on Windows 7 | Low (often times out) | High | | Multiple PCs | Must re-download each time | Copy USB/DVD once | | Corporate/Offline PCs | Useless | Essential | Extended support ended in 2021
Copy the offline installer to a network share or USB. Then run: Q: Can I install