Can't enable .NET Environment in Windows 10 1903

I do like a challenge, but so far I have not found any way to fix this issue with .NET. The commands meant to restore it do not work.

I even did a Windows Reset, but the results were no better than your in-place upgrade. .NET still looks the same, with several items misplaced in the list of available Windows Features. Even MMC cannot load the Event viewer now.

This was all on a Hyper-V VM, so I can restore that easily, but I will try to send in a Feedback Hub Capture of the issues before I am done with it.

That leaves a clean install as the only way forward that I can suggest. My system is setup with all data on separate disks, so a clean install for me has very minimal impact.  I totally remove all partitions from my NVMe SSD during a clean install.  I do not have many Apps, so it does not take long to be back to normal, and usually with several things improved, after a clean install.

No none of those are there and attempting to install them results in "unknown" message.

To replicate, I uninstalled every single Feature and then went into DISM commands and kept uninstalling with a /Remove switch to totally remove everything. Now the Features list has everything disabled.

From the online searches I have done, difficulty reinstalling .NET features has happened in previous Windows versions and some suggest that Disabling Features was behaving as if /Remove had been used, but that the usual reinstall commands no longer work.

I did install PowerShell 6.0, which gives me another way to run commands, but the results are no better than using the DISM commands.  The pkgmgr commands do run without error, but they do not resolve it.

Not sure if you are still trying on this, but I am still trying to learn more about it.

I managed to recreate your situation, but have not been able to recover from it yet. Searching online does not find a lot about this and most who try to fix it end up needing to do a Windows Reset to fix it.  A few post things that appear to work in some cases, but none have worked for me yet.  The "parent features" required are still a mystery to me at this point.

Wow Don, appreciate your effort here mate!

I haven't reset the PC just yet, so let me know if there's anything you'd like me to try.

How did you end up replicating the issue?

When you use the command "DISM /Online /Get-Features /PackageName:Microsoft-Windows-Foundation-Package~31bf3856ad364e35~amd64~~10.0.18362.1 /Format:Table", do the following features appear at all? I think these are the missing .NET features that can't be enabled (because they're not there):

NetFx4-AdvSrvs

WCF-Services45

WCF-TCP-PortSharing45

Not sure if you are still trying on this, but I am still trying to learn more about it.

I managed to recreate your situation, but have not been able to recover from it yet. Searching online does not find a lot about this and most who try to fix it end up needing to do a Windows Reset to fix it.  A few post things that appear to work in some cases, but none have worked for me yet.  The "parent features" required are still a mystery to me at this point.

I had the same issue.

After upgrading to 1903, .NET 3.5 disappear from appwiz.cpl. Powershell broken due to .NET loss, and many apps too.

Sfc /scannow, Dism /Online /Cleanup /[ScanHealth, CheckHealth, or RestoreHealth] didn't help.

I just add to do these line in cmd as admin to solve that one :

• start /w pkgmgr /iu:Microsoft-Windows-NetFx3-OC-Package
• start /w pkgmgr /iu:Microsoft-Windows-NetFx4-US-OC-Package
• start /w pkgmgr /iu:Microsoft-Windows-NetFx3-WCF-OC-Package
• start /w pkgmgr /iu:Microsoft-Windows-NetFx4-WCF-US-OC-Package

I see that a user mentionned that, you could also do that with dism utility.

I think they are already fixing this one.