The Sims 4 March 17, 2026 Update Issue: Mods and Custom Content Not Loading
The Sims 4 March 17, 2026 update caused mods and custom content to stop loading. Learn what happened and how to fix it.



Following the March 17, 2026 update for The Sims 4, many players encountered an unexpected issue that affected mods and custom content (CC). The problem quickly spread across the community as both script mods and standard CC failed to function properly after the patch.

What Happened to Mods and CC?

Shortly after installing the update, players reported several issues, including:
  • Mods and CC not appearing in-game
  • Files in the Mods folder not being recognized
  • Saves loading with missing items, outfits, or build objects

This was not a typical post-update situation. Even basic custom content—such as hair, clothing, and furniture—was affected, which is unusual since these items typically remain functional after patches.

In some cases, the game appeared unable to properly read .package files, preventing custom content from loading entirely.

Why This Issue Was Different

While updates often break script-based mods, this issue stood out because it impacted nearly all types of custom content, including non-script items.

This suggested the problem was tied to core changes within the game itself, rather than individual mods. Early observations pointed to internal system updates introduced in the patch, which may have affected how the game processes external files.

Because of this, even players who followed best practices—such as removing mods before updating—still experienced issues after launching the game.

Community Reports and Impact

Players across different platforms shared similar experiences, including:
  • Entire CC libraries failing to load
  • Create-a-Sim items missing
  • Builds appearing incomplete due to absent custom objects

Some users also noted that reinstalling mods or reorganizing their folders did not resolve the issue, reinforcing that the problem was not caused by the content itself.

Official Response and Fix Status

The issue was acknowledged shortly after reports surfaced and was identified as a high-priority problem. The team confirmed that a fix was already in progress and would be deployed quickly.

In an official statement, the team shared on Discord:

The Sims Team Statement on Discord


“Sul Sul, we have a fix for the issue that was unintentionally impacting CC. This update will start rolling out roughly within the next 15 hours & we’ll confirm once it’s live.

Thanks for your reports & patience while we worked to resolve this asap!”

This announcement reassured players that the issue had been identified and that a resolution was imminent through a follow-up update.

What Players Should Do

If you were affected by this issue, consider the following steps:
  • Disable mods and CC temporarily until the fix is released
  • Back up your save files before making changes
  • Avoid deleting or reinstalling large amounts of content
  • Re-enable mods only after confirming compatibility with the updated version

Final Thoughts

The March 17, 2026 update issue highlighted how essential mods and CC are to many The Sims 4 players. While update-related disruptions are common, this case was more widespread due to its impact on nearly all custom content.

With a fix already rolling out, normal functionality is expected to return quickly. Players can look forward to restoring their custom content and continuing their gameplay with minimal long-term impact.