Microsoft IIS SSL Certificates

IIS Server SSL Certificate Solutions from DigiCert®

DigiCert is recommended by Microsoft as a trusted certificate providers for its fully compatible certificates with all versions of IIS. Installing IIS certificate is effortless with only one file needed to get encryption running on your IIS server.

Because DigiCert works hard to ensure full compatibility with all major browsers and mobile devices, you can be relief of warning signs appearing on your visitor’s browsers – giving them a seamless user experience on your site.


All DigiCert Certificates are fully compatible with IIS server. Now it’s about selecting the certificate that best suits your needs. 

SSL Plus Certificates

Single-name Certificate that encrypts and secure one domain. A certificate for ‘’ would work with ‘’

Learn more about SSL Plus

 EV Certificates

Extended Validation (EV) Certificate is the gold standard for web security. Secure a single domain with the green bar of assurance and gain visitor’s trust immediately.

Learn more about EV Certificates

 Multi-Domain Certificates

Multi-Domain Certificates are a flexible solution to secure up to 25 completely different domains under an organization’s name. Ideal for companies with many domains and subdomains.

Learn more about Multi-Domain Certificates

ev multi domain EV Multi-Domain Certificates

EV Multi-Domain Certificates functions the same as an UC Certificate but displays a green bar of assurance for higher trust.

Learn more about EV Multi-Domain Certificates

 Wildcard SSL Certificates

Wildcard SSL Certificate allows you to secure a base domain and unlimited number of subdomains. For eg. securing ‘*’ would give you the capacity to secure ‘’,  ‘’ – and the list goes on. 

Learn more about Wildcard Certificates


Frequently Asked Questions (FAQ) on IIS Server Certificates:

Q: Am I able to use the same IP address and port to setup more than one website on my IIS Server?

A:  Yes, only if your IIS server is currently on version 6 and if you are using either one Wildcard or UC Certificate to secure all the sites.  

Q:  Can I use the same Wildcard or UC Certificate on multiple servers?

A: Yes. DigiCert has an unlimited server license that allows customers to install all DigiCert Wildcard and UC Certificate on multiple IIS Servers.  It is even possible for the same certificate to have its own unique key on each servers by requesting ‘duplicate certificates’ for each of your servers. Talk to us if you have such specific requirements.