If you downloaded directly from microsoft.com or dotnet.microsoft.com , it is safe. Some aggressive antivirus settings may flag the extraction behavior. Add the file to your exclusion list or temporarily disable real-time scanning.
When downloading the offline installer from external mirrors, users must verify the file integrity to ensure it has not been tampered with. net framework 49 offline installer for windows
Alternatively, use PowerShell:
The offline installer will not work on Windows 7, Windows Vista, or Windows XP (extended support ended). If you downloaded directly from microsoft
Innovation now happens in .NET 9 (released Nov 2024) and .NET 10 (released Nov 2025). Downloading the Official .NET Framework Offline Installers Downloading the Official
| Feature | .NET Framework 4.8.1 (Latest) | .NET 6/7/8/9 (modern) | |---------|-------------------------------|------------------------| | | Yes (standalone ~150 MB) | Yes (self-contained publishes) | | Included in Windows | Yes (built into Windows 11/10) | No (install separately) | | Best for | Legacy WinForms, WPF, ASP.NET Web Forms | New cross-platform apps, microservices | | Support lifecycle | Windows OS lifecycle (long-term) | Even-numbered LTS versions (e.g., .NET 6, 8) |
Let’s address the elephant in the room immediately.