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A 3-Step Quick Guide to Install SSL on Windows Server (Microsoft IIS)

Secure website experience requires higher server security. Therefore, securing a web server on Microsoft Internet Information Services (IIS) is crucial. The easiest way to secure your website on Microsoft IIS is to install SSL on a Windows server.

However, why is SSL so important?

The Lazarus group’s recent attack on IIS servers in South Korea indicates the need for higher security to ensure data protection. Hackers exploited IIS servers to access the data of many businesses. Therefore, if you are using Microsoft IIS, security is crucial.

SSL certificates help you secure the server from cyberattacks by protecting the communication between the server and the browser. It encrypts the data and scrambles the information into an array of random strings that is hard to read for cyber attackers. 

This article will focus on installing SSL on Windows servers and ensuring website security. Let us briefly understand what Microsoft IIS and an SSL certificate are.

What is Microsoft IIS?

Microsoft IIS is an extensible web server that you can use to host websites and build reliable web applications. It supports HTTP, HTTP/2, and HTTPS, FTP, FTPS, SMTP, and NNTP1.

Further, you can use it for media streaming to web applications or any other use case for business needs.  

Its scalable and open architecture can handle the most demanding tasks and peak loads, making it an attractive option for many organizations. 

What is an SSL certificate?

An SSL certificate is an encryption-based security approach where you can secure the communication between a server and browser through cryptographic encryptions. You can get an SSL certificate from a leading Certificate Authority (CA) by submitting your details in a certificate-signing request (CSR).

Here is how you can generate CSR in the IIS server,

You can submit this file to the CA to issue an SSL certificate. CA will verify all your details and issue an SSL certificate, which you can use to secure the Windows server. Once you get the SSL certificate from CA in your email, it is time for the installation process to begin.

Step-by-step Process to Install SSL on Windows Server

If you want to install an SSL certificate on Windows server (IIS 10), here are some pre-requisites to keep ready,

  1. A valid SSL certificate from a trustworthy CA
  2. IIS 10 server installed on your device and configured properly
  3. Admin access to your server

Step 1: Install the root certificate

Step 2: Install Intermediate SSL certificate on IIS

To install SSL on a Windows server, you need a complete installation of root, intermediate, and entire chain of certificates. Therefore, once your root certificate is installed, you can MMC to install the intermediate certificate.

Step 3: Install the certificate and bind the website

To install SSL on a Windows server, you can use IIS Manager and MMC both. First, click on Start and go to the admin tools on your device.

Once you click on OK, your certificate will be installed. Next, you can bind it to your website by going to the “Connections.” Expand the “Sites” folder under “Connections” and click on “Bindings” for the website you want to install the SSL certificate.

Click on the “Add” button on the site bindings Window and change the “Type” to “https” from the drop-down menu. Next, select the “friendly name” of the certificate in the “SSL Certificate” and click OK. Your website is now secure with an SSL certificate installed and enforcing HTTPS protocol.

Key Takeaways

With the increasing usage of Windows servers for hosting websites and web apps, security has become a crucial issue. Due to higher cyber threats, using security measures like, SSL certificates is essential. Here we have discussed comprehensively how to install SSL on the Windows server. However, your project’s approach and method can differ depending on specific requirements.

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