Certificate Error during GHCup Installation on Windows 10

[rotaroced]

I encountered a problem while trying to install GHCup on my Windows 10 PC following the instructions from the GHCup website.

I used the following PowerShell command to download the tool:

Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;try { Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $true,$false,$false,$false,$false,$false,$false,"","","","",$true } catch { Write-Error $_ }

During installation, a MinGW window opens and attempts to connect to 'www.haskell.org', but it fails with the following error:

--2024-06-23 14:24:05--  https://www.haskell.org/ghcup/sh/bootstrap-haskell
Loaded CA certificate '/usr/ssl/certs/ca-bundle.crt'
Resolving www.haskell.org (www.haskell.org)... 2604:1380:4641:a100::1, 147.75.54.133
Connecting to www.haskell.org (www.haskell.org)|2604:1380:4641:a100::1|:443... connected.
ERROR: The certificate of ‘www.haskell.org’ is not trusted.
ERROR: The certificate of ‘www.haskell.org’ doesn't have a known issuer.
Press any key to exit

Environment:

• OS: Windows 10
• PowerShell version: 5.1.19041.4522
• Existing tools: Chocolatey, MSys2 (in C:\tools\msys64)

I have tried disabling the firewall but this did not change the outcome.

[hasufell]

Did you try pointing it to the existing msys2 from chocolatey? It asks whether there's a preexisting one during installation

[rotaroced]

Yes, I tried using C:\tools\msys64 and installing a new msys2, but the results were identical in both cases

[rotaroced]

Proceeding to the manual installation solved the problem.