TLS Server Certificates

What Is It?

A server certificate is needed to enable Transport Layer Security (TLS) operation on a server (typically a web server), which verifies the server's identity to clients (typically web browsers), and enables encryption to secure communications from eavesdropping and maintain the integrity of the data transmitted. To avoid warning dialogs issued by web browsers, the certificate must be digitally signed by a trusted third party, a Certificate Authority (CA). UIC currently provisions certificates using Sectigo (formerly Comodo) as our CA.


  • Uses Sectigo certificates (also known as certs )
  • Certificate are available for servers in the domain only
  • Certificates are available with a 1 renewal option


  • Certificate Signing Request (CSR) that is created from a 2048-bit or larger key pair.
  • Revocations are not automatically performed when a certificate renewal is requested.


The server for which the certificate is issued must be used within the domain. Certificates are usually processed within 2 business days.

Expiration Warnings are sent out to the registered requestor on 35, 28, 21, 14, and 7 through 0 Days until the expiration.

Who Is Eligible To Use It?

  • Faculty
  • Staff

Where Can I Get It?

Select the Request TLS Server Certificate button located on this page.

How Do I Use It?

How to Troubleshoot a Digital Certificate

How Much Does It Cost?

This service is funded by the University; there are no direct costs to clients.

How Can I Get Support?

If you are experiencing a problem with this service, please report it. If you just have a question, feel free to ask us.

Service Levels

Service Request Fulfillment Time 2 business days
Incident Resolution Time 2 business days
Service Availability 24x7
Maintenance Window(s) Approved Technology Solutions maintenance window(s)
Service Notification Channel(s) IT Service Notices
Request TLS Server Certificate

Related Articles (4)

A chained cert is one file that contains all of the certs either in forward or reversed order. That is your server cert, the intermediate cert(s), and the root cert. Depending on what format you need, using a text editor, you'll want to combine the certificate files.
Only University faculty or staff members my request SSL certificates.
Only University faculty or staff members may request SSL certificates.
In order to maintain the highest security standards, promote the safety of data, and align with industry-wide best practices, UIC students, faculty and staff using an older browser will no longer be able to access web-based services including,, and Microsoft Office 365 and must upgrade their browser.


Service ID: 459
Mon 12/21/20 7:38 PM
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