The last major version of the standalone .NET Framework is , followed by the .NET Framework 4.8.1 (released as an in-place update). Microsoft has shifted its active development to the open-source, cross-platform .NET Core / .NET 5+ (now simply called ".NET" – e.g., .NET 6, .NET 7, .NET 8, .NET 9).
If you are looking for an offline installer for the most recent version, you should use the .NET Framework 4.8.1 links from the official Microsoft Download Center Key Downloads for .NET Framework 4.8.1 Offline Installer net framework 49 offline installer for windows