TIL how to ignore SSL cert verification in Powershell
2025-02-19 • 1 min

In Powershell 5.1, there is no flag to easily ignore SSL/TLS verification in curl or Invoke-WebRequest. The following is a workaround:

add-type @"
    using System.Net;
    using System.Security.Cryptography.X509Certificates;
    public class TrustAllCertsPolicy : ICertificatePolicy {
        public bool CheckValidationResult(
            ServicePoint srvPoint, X509Certificate certificate,
            WebRequest request, int certificateProblem) {
            return true;
        }
    }
"@
[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy
Invoke-WebRequest -Uri "https://api.example.com"

In Powershell >7, we can use the -SkipCertificateCheck flag.

# References

Edited: 2025-02-19
#powershell #curl