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Mac OS X - Identity of developer cannot be confirmed

We do NOT recommend using this procedure for items not downloaded directly from the IS&T Software Grid. They are applications not recommended or certified by either MIT or Apple. Use extreme caution.


When trying to install MIT Certificates or other applications from the IST Website, you may see this error message:

Unidentified developer error message


  1. Open System Preferences by clicking on the Apple in the left hand corner of your screen.
  2. Click on Security and Privacy
    All Settings - Security and Privacy highlighted
    Result: You will see the last application that prompted the error message, in this case it was Certaid
  3. Click on Open Anyway
    You may have to click on the lock icon on the lower left corner of the window and input your computer account name and password. You must have administrative privileges on your computer to do this.

    Security and Privacy settings page
    Result: The the installation process will now continue.

See Also

IS&T Contributions

Documentation and information provided by IS&T staff members

Last Modified:

June 16, 2017

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