If you legitimately backed up your own GP05 folder as a ZIP (for reinstallation on a non-internet PC), here is the correct extraction method:

Some mods (like Better Exceptions or Mod Conflict Detectors) may incorrectly flag a missing sims4dlcgp05parenthoodzip. This usually means the game registry doesn’t recognize Parenthood as installed, even if folders are present.

Before troubleshooting the file, understand why people hunt for it. The Parenthood GP (released May 30, 2017) revolutionized family gameplay. Key features include:

Without this pack’s data present (i.e., if sims4dlcgp05parenthoodzip is missing or broken), family households become shallow—no curfews, no grounding, no volatile moods.

Before hunting down the file, you should understand why so many players search for it. The Sims 4: Parenthood (released May 30, 2017) revolutionized family gameplay. Here is what the DLC unlocks: