Installing .Net 4.7

[foxy]

I've downloaded updated software for my Garmin GPS, and I've gotten the error message during installation

"cannot run on Win 7 RTM with .NET 4.5.2 installed. Install Win 7 SPI to run in a supported environment." I have SP1.

So I D/L .NET 4.71 from MS, and that won't install either. The surgery was a great success, but the patient died.

Log:

OS Version = 6.1.7601, SP = 1.0, Platform 2, Service Pack 1
OS Description = Win7 - x64 Ultimate Edition Service Pack 1
MSI = 5.0.7601.23593
Windows version = amd64_windowsfoundation_31bf3856ad364e35_6.1.7600.16385_none_5f2ecc1aaa4ac3b2.manifest
Windows servicing = 6.1.7601.23505
CommandLine = D:\2026f3f2fd6691602d\\Setup.exe /x86 /x64 /web
TimeZone = Eastern Daylight Time
Initial LCID = 1033
Using Simultaneous Download and Install mechanism
Operation: Installing
Package Name = Microsoft .NET Framework 4.7.1 Setup
Package Version = 4.7.02558
User Experience Data Collection Policy: Disabled
Number of applicable items: 12
Exe (D:\2026f3f2fd6691602d\SetupUtility.exe) succeeded.
Exe Log File: dd_SetupUtility.txt
ServiceControl operation succeeded!
ServiceControl operation succeeded!
ServiceControl operation succeeded!
ServiceControl operation succeeded!
Exe (D:\2026f3f2fd6691602d\SetupUtility.exe) succeeded.
Exe Log File: dd_SetupUtility.txt
MSI (D:\2026f3f2fd6691602d\netfx_Full_x64.msi) Installation failed. Msi Log: Microsoft .NET Framework 4.7.1 Setup_20180328_033123518-MSI_netfx_Full_x64.msi.txt
Exe (D:\2026f3f2fd6691602d\SetupUtility.exe) succeeded.
Exe Log File: dd_SetupUtility.txt
MSI (D:\2026f3f2fd6691602d\netfx_Full_x64.msi) Installation failed. Msi Log: Microsoft .NET Framework 4.7.1 Setup_20180328_033123518-MSI_netfx_Full_x64.msi.txt
Final Result: Installation failed with error code: (0x80070643), "Fatal error during installation. " (Elapsed time: 0 00:02:01).