Net Framework 4.5 Offline Installer - Microsoft

: Once the process completes (usually 10–15 minutes), restart your computer to finalize the changes. Troubleshooting Common Issues

Many legacy applications—particularly in healthcare, finance, manufacturing, and government sectors—still rely on .NET 4.5. If you’re supporting older software on Windows 7, 8, or even Windows 10/11, this runtime may be required. microsoft net framework 4.5 offline installer