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4.0 Framework installation :Error Code 643
also known as: .NET Framework update installation error: "0x80070643" or "0x643"
I've googled and tried everything I've came across and still no luck with installing 4.0 Framework
this only started happening once I used a tool to change my Windows install from professional to home, (i installed the wrong version and my key didn't work) so i used a tool to downgrade my account so i could activate windows
the tool i used was called: "Windows 7 Downgrader" and when the problem started happening (no longer able to run daemon tools)
I'm unable to run : System Info - See Your System Specs
as that also requires the framework i can't install.
- I've disabled (and even uninstalled) my Norton antivirus
- I've run the Microsoft Fixit
- I've run the NetFxRepair Tool
- I've run the dotnetfx cleanup tool and re-installed versions 1, 1.1 SP and 35 (35 won't install and throws an error saying to install 4.0)
help
Code:OS Version = 6.1.7601, Platform 2, Service Pack 1 OS Description = Windows 7 - x64 Home Premium Edition Service Pack 1 CommandLine = E:\6a7e1311c8e7f880805be9\\Setup.exe /x86 /x64 TimeZone = GMT Daylight Time Initial LCID = 2057 Using Simultaneous Download and Install mechanism Operation: Installing Package Name = Microsoft .NET Framework 4 Setup Package Version = 4.0.30319 User Experience Data Collection Policy: AlwaysUploaded Number of applicable items: 11 Exe (E:\6a7e1311c8e7f880805be9\SetupUtility.exe) succeeded. Exe Log File: dd_SetupUtility.txt ServiceControl operation succeeded! ServiceControl operation succeeded! Exe (E:\6a7e1311c8e7f880805be9\Windows6.1-KB958488-v6001-x64.msu) failed with 0x240006 - (null). Exe (E:\6a7e1311c8e7f880805be9\SetupUtility.exe) succeeded. Exe Log File: dd_SetupUtility.txt MSI (E:\6a7e1311c8e7f880805be9\netfx_Core_x64.msi) Installation failed. Msi Log: Microsoft .NET Framework 4 Setup_20160502_225627285-MSI_netfx_Core_x64.msi.txt Final Result: Installation failed with error code: (0x80070643), "Fatal error during installation. " (Elapsed time: 0 00:00:07).