$friendlyName = "IIS Express Development Certificate" $certStore = "Cert:\LocalMachine\My" $oldCert = Get-ChildItem $certStore | Where-Object FriendlyName -match $friendlyName if(-not $oldCert) { Write-Host "$friendlyName certificate not found" return } Write-Host "Removing $($oldCert.Thumbprint) certificate" Remove-Item -Path $oldCert.PSPath -Confirm:$false Write-Host "Creating $friendlyName certificate" $selfSignedCertParam = @{ Subject = "localhost" DnsName = "localhost" KeyAlgorithm = "RSA" KeyLength = 2048 NotBefore = (Get-Date) NotAfter = (Get-Date).AddYears(5) CertStoreLocation = $certStore FriendlyName = $friendlyName HashAlgorithm = "SHA256" KeyUsage = "DigitalSignature", "KeyEncipherment", "DataEncipherment" TextExtension = @("2.5.29.37={text}1.3.6.1.5.5.7.3.1") } $cert = New-SelfSignedCertificate @selfSignedCertParam # The app ID is the IIS Express app ID $certThumbprint = $cert.Thumbprint $appId = "{214124cd-d05b-4309-9af9-9caa44b2b74a}" $startPort = 44300 $endPort = 44399 Write-Host "Binding ${certThumbprint} certificate using netsh port=${startPort}:${endPort} and appID=${appId}" $startPort..$endPort | ForEach-Object { $port = $_ cmd /c "netsh http delete sslcert ipport=0.0.0.0:$port > nul 2>&1" cmd /c "netsh http add sslcert ipport=0.0.0.0:$port certhash=$certThumbprint appid=$appId certstorename=MY > nul 2>&1" }