((exclusive)) — Net Framework 4.3 Offline Installer

(Released 2012–2014, End of Life) .NET Framework 4.6, 4.6.1, 4.6.2 (Released 2015–2016) .NET Framework 4.7, 4.7.1, 4.7.2 (Released 2017–2018)

| Error | Cause | Fix | |-------|-------|-----| | “This app requires .NET Framework 4.3” | Outdated installer or misdetection | Install .NET 4.8 or 4.7.2 | | “Blocked by Windows 10 1809+” | 4.3 is an OS component, not redist | Use DISM or Windows Update offline catalog | | “Error 0x800f080c” | Feature-on-demand fails | Provide source media with sxs folder | | “No 4.3 offline installer on Microsoft site” | Correct – it never existed | Redirect to 4.8 offline | net framework 4.3 offline installer

: The original "Full" standalone version (now out of support) [13, 38]. Downloading the Offline Installer offline installer (Released 2012–2014, End of Life)