Microsoft ended extended support for Windows 7 on . This implies:

If you are using Windows 7 for development, consider using a for your .NET projects to keep your host system secure. Troubleshooting Common Errors

** .NET 6.0 / 7.0 / 8.0:** These modern versions generally Windows 7. Microsoft ended support for Windows 7 in 2020, meaning newer versions of the .NET runtime are designed for Windows 10 and 11. However, some developers have found workarounds for .NET 6 (Long Term Support) with specific security updates. Essential Prerequisites

While .NET Framework 4.8 is still receiving some security definitions, the underlying Windows 7 operating system is no longer receiving public security updates from Microsoft. Running .NET applications on an unsupported OS increases your vulnerability to malware.