Cause: Missing Windows Update KB2918614 or KB3020369.
Fix: Download and install Servicing Stack Update for your Windows 7 version from Microsoft Catalog. Then retry .NET installation.
Security-wise: Microsoft ended support for Windows 7 in January 2020. Running .NET 4.5.2 on an unsupported OS exposes you to unpatched vulnerabilities (CVE-2024-29053, etc.). net framework 45 2 offline installer for windows 7 top
Practical reality: If you need this for a dedicated offline machine (POS system, CNC controller, legacy medical device), it remains stable. Do not use it on a daily-driver internet-connected PC without a modern firewall and application allowlisting. Cause : Missing Windows Update KB2918614 or KB3020369
Do not trust third-party "cleaner" sites. Use these verified URLs (still active as of 2025): Note: You need Windows 7 SP1 and KB2919355
Note: You need Windows 7 SP1 and KB2919355 (Platform Update) installed prior to setup. Without these, the installer will exit with an "Unsupported OS" error.
| Error code / message | Cause | Fix |
|---------------------|-------|-----|
| Blocked by SHA-2 | Missing KB4474419 | Install KB4474419 + KB4490628, reboot |
| 0x800713ec | .NET already installed | Check via Control Panel → Programs → Turn Windows features on/off |
| 0x800f0906 | CBS corruption | Run sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth (if DISM available) |
| Installation hangs | Conflicting MSI install | Reboot, stop Windows Installer service, retry |
| “This update is not applicable” | Wrong OS version | Ensure Windows 7 SP1 (not RTM) |
| Error 0x80070643 | MSI engine failure | Run MicrosoftProgram_Install_and_Uninstall.meta.diagcab (Microsoft Fix it) |