OS Ventura 13.1 Error 69673

Follow the advise to update the existing version of macOS Monterey to the current version of 12.6.3 before attempting the upGrade to Ventura.

Specific to keeping the computer up to date

Keep your Mac up to date - Apple Support (CA)

About the security content of macOS Monterey 12.6.3 - Apple Support (CA)

Once that is achieved and still having issues upGrading

refer to link below

If an error occurred while updating or installing macOS

Before updating to Ventura you should first, update to macOS Monterey 12.6.3. Reboot. (If you are still running Monterey) Then update to Ventura 13.2 which is the most current version as of this date.

Hey there!

Glad to help if able to.

Can you say when you receive this error message, and when doing what task?

Likewise, can you say the goal you’re trying to accomplish on your Mac and how this error is preventing it?

Thanks!