Unable to install .NET Framework 3.5 (including 2.0 and 3.0) on Win10 (system)

Question

Hello,  The entire title doesn't fit, so it's: “Unable to install .NET Framework 3.5 (including 2.0 and 3.0) on Win10 (Operating system 17134.523) / and Windows Update” Because I think the root problem is due to Windows Update which continuously fails and shows me this message: “Cumulative update for Windows 10 Version 1803 for x64 systems (KB4487017) - Error 0x80070002”  I did some research online, I read here that I needed to go to the “folder C:/Windows/SoftwareDistribution/Download”, delete everything, and manually download and install the latest update via this link: https://?q=KB4487017  Fearing that I might do something wrong, I did not delete the “download” folder, but I downloaded the version weighing 810MB that corresponds to my error message and matches my x64 system.  I wanted to install “.NET Framework” again, but I'm running into the same issue, the same for Windows Update, so the 810MB download was absolutely useless!  By following Windows help links, I noticed here: https://support.microsoft.com/fr-fr/help/4480966/windows-10-update-kb4480966 that my system's build version, 17134.523, dates back to January 8, 2019, yet I bought my PC on January 30, 2019, and I wonder why I didn't get version 17134.556 that dates from January 15, 2019?! Anyway, I have several updates overdue and cannot apply them!  Thank you for helping me, because between .NET Framework and Windows Update… I'm cracking up!!!  Thank you very much  Configuration: iPhone / Safari 12.0

ChariduP · Accepted Answer

Hello El-Chapoune,  Error 0x80070002:

nop · Answer

Hi, to be honest, I'm not sure I understand why you insist on installing an obsolete version of .NET Framework 3.5.

kaneagle · Answer

Hello, If you want to upgrade to the latest version, which is 1809: Download this -->> MediaCreationTool1809 <<-- Run it Check --> Upgrade this PC now -- The human being is at its best when things are at their worst.

El-Chapoune · Answer

Thanks for your feedback. I clicked on the first link from "ChariduP" and followed the procedure, which directed me to download a Windows Update diagnostic, which rebooted and put everything back in order: - Windows Update as Framework…. However, when I tried to launch the game (after installing Framework), I received a new error message: [Microsoft .NET Framework An unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will shut down immediately. An external component has raised an exception] If I click on "Details," I get this: [See the end of this message for more details on the Just-In-Time (JIT) debugging call instead of this dialog box.] (At the very end here is the message): [***************** JIT Debugging ******************** To enable debugging (JIT), the configuration file for this application or computer (machine config) must have the jit.Debugging value set in system.windows.forms. The application must also be built with debugging enabled. For example: When Just-In-Time debugging is enabled, unhandled exceptions will be sent to the JIT debugger registered on the computer rather than being handled by this dialog box.] So, I'm even more lost now!

El-Chapoune · Answer

Well, the version of Windows doesn't interfere at all; it's mainly about the game I want to install, "Batman Arkham Asylum," which apparently has a lot of bugs at startup. I needed PhysX for that, so I installed it.  Now the error message is different, still Microsoft .NET Framework, which states "an unhandled exception… immediately.  But this time there's a different message below (just above the "details" tab):  [Could not load the assembly '

Unable to install .NET Framework 3.5 (including 2.0 and 3.0) on Win10 (system)

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