Launch ORCA by right clicking (or control clicking) on the ORCA application icon and select "Open".

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Screenshot pointing to Open function in a list of functions

When prompted, select "Open" from the dialog that follows. This only needs to be done once after installing MacOS Ventura or installing a new copy of ORCA. ORCA updates do not require the user to repeat the procedure.

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Screen shot showing error message and pointing to Open function