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Certificates at MIT

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Certificates are your key to secure web services at MIT, such as Atlas, and WebSIS and Stellar. They are a safe way for our web applications to identify you without you needing to type in a username and password. Certificates expire once per year, creating the need to renew them at least this often. They must be installed on each browser for each computer that you plan on using to access certificate-protected sites.

Get Certificates

CertAid for MacOS and Windows (Recommended)

We strongly recommend using CertAid to configure your certificates for Chrome, Internet Explorer, and Safari. It manages the entire certificate setup procedure, giving you a more reliable installation experience. The setup procedure includes installing the MIT CA as well as your personal certificate, optionally deleting old certificates, and setting the correct identity preferences via a single, graphical application. If you need to retain access to old user certificates, e.g., for access to encrypted mail, you should not delete them.


Mac OS X


Mobile Devices


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Still Need Help?

Send an email to or call the MIT Computing Help Desk at 617.253.1101.

IS&T Contributions

Documentation and information provided by IS&T staff members

Last Modified:

November 25, 2015

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