security update 13.3.1
failed to prepare the software update
MacBook Pro 13″, macOS 13.3
Question marked as
If an error occurred while updating or installing macOS - Apple Support
Several options included from the above link to trouble shoot this issue including attempting to insert while booing from Safe Mode
Added >>
1 - Software on the computer interfering with the download process including AntiVirus Software
Notation: Disabling the AV Software may or may not solve the issue. Removal of the AV Software may increase the chances of the download to perform as expected.
2 - Running behind a VPN which may increase Packet losses or corruption of the download