SQL server 2019 installation failed, "required files failed to install"

Question

I'm trying to install an SQL express server for my own personal projects but nothing I do is working, I checked online on tutorials for how to set everything up but the server just won't launch for some reason. And the error doesn't show any error codes or hints on what happened, just sends a link back to the SAME site which I downloaded it from (microsoft) and after trying to reinstall it from the new link and getting rid of the old one, nothing happens, same error and same link.

Answer 1

Hi ObadahShikh-4394,

Welcome to Microsoft Q&A.
Please try to add a backslash between Microsoft and .NetFramework in the registry:

Set-ItemProperty -Path 'HKLM:\SOFTWARE\Wow6432Node\Microsoft\.NetFramework\v4.0.30319' -Name 'SchUseStrongCrypto' -Value '1' -Type Dword  
Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\.NetFramework\v4.0.30319' -Name 'SchUseStrongCrypto' -Value '1' -Type Dword  

Please check Erland’s answer from this similar thread which might be helpful.

Best Regards,
Amelia

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Answer 2

Hi @Obadah Shikh ,

Open PowerShell as administrator and type the following commands.

Set-ItemProperty -Path 'HKLM:\SOFTWARE\Wow6432Node\Microsoft.NetFramework\v4.0.30319' -Name 'SchUseStrongCrypto' -Value '1' -Type Dword

Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft.NetFramework\v4.0.30319' -Name 'SchUseStrongCrypto' -Value '1' -Type Dword

Then install it again.