Ironpdf License Key ❲720p 2027❳

bool isValid = License.IsValidLicense("YOUR-KEY");
if (!isValid) 
    throw new Exception("License key invalid or expired");

Use this in your startup health check.

Program.cs

using IronPdf;
using Microsoft.Extensions.Configuration;

var builder = new ConfigurationBuilder()
.AddJsonFile("appsettings.json")
.AddEnvironmentVariables();


var config = builder.Build();


// Set license key from config or env var
IronPdf.License.LicenseKey = config["IronPdf:LicenseKey"];


// Verify
if (!IronPdf.License.IsValidLicense)
throw new Exception("Invalid IronPDF license key");



// Your PDF generation code here...

appsettings.json


  "IronPdf": 
    "LicenseKey": "IRONPDF-YOUR-KEY-HERE"

IronPDF binds evaluation keys to a specific machine fingerprint. If you change hardware (RAM, CPU, Disk) or clone a VM, the key breaks. Solution: Log into the Iron Software portal and "deactivate" the old machine to release the license lock, or purchase a key that supports floating licenses. ironpdf license key

You can store the key in configuration to avoid hardcoding.

<configuration>
  <appSettings>
    <add key="IronPdf.LicenseKey" value="IRONPDF-YOUR-ACTUAL-KEY" />
  </appSettings>
</configuration>

Then in code, you can load it:

string key = ConfigurationManager.AppSettings["IronPdf.LicenseKey"];
IronPdf.License.LicenseKey = key;

A: Immediately log into the Iron Software portal and "Regenerate" your license key. This invalidates the old key instantly. Deploy the new key to your servers. bool isValid = License

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