Nothing kills a Sims 4 session faster than loading up your favorite save and being greeted by a cryptic error message. If you have stumbled across Error Code 109 while trying to jump back into your virtual household, you are not alone. This error has been plaguing players for years, and with The Sims 4 now free-to-play and receiving regular patches, it pops up more often than ever especially right after updates.
Whether you are seeing a string like 109:dd2b8c5:d5ca6878 or a simple “game failed to load” notice, the good news is that most cases of Sims 4 Error Code 109 can be fixed without losing your saves. In this guide, I will walk you through every fix that actually works in 2026, starting with the community-tested solutions and moving through to platform-specific and last-resort options. I have also included console fixes for PS5, PS4, and Xbox players who usually get left out of these troubleshooting guides.
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Post Contents
What Does Sims 4 Error Code 109 Mean?
Sims 4 Error Code 109 is a file-loading error that typically appears when the game cannot read your save data or mod files correctly. The message usually reads “The game failed to load” followed by a code string such as 109:dd2b8c5:d5ca6878 or 109:fd81e803:cf89c7c3. Those suffixes look intimidating, but they are just internal reference codes. They do not change the fix.
The most common trigger is a conflict between outdated custom content (CC), script mods, or corrupted cache files and the current game version. Since The Sims 4 went free-to-play in October 2022, the player base has exploded, and so has the volume of custom content. When EA releases a patch, mods that worked yesterday can suddenly break today, throwing Error 109 on your next load.
It is worth noting that some players confuse this with “EC:109” on the EA App. That is a separate connection error related to the launcher itself, not your game files. If you see EC:109 while trying to open the EA App, restart the app or check your internet connection. The rest of this guide focuses on the in-game Sims 4 Error Code 109 that blocks your save from loading.
How To Fix Sims 4 Error Code 109 in 2026?
Before you touch anything, back up your saves. Navigate to Documents > Electronic Arts > The Sims 4 > saves and copy that entire folder somewhere safe. Every fix below is safe if you have a backup, and most players on Reddit and EA Forums agree that skipping this step is how progress gets lost.
Here are the fixes ranked from fastest to most thorough. Try them in order, testing the game after each step so you do not waste time on unnecessary repairs.
1. Delete localthumbcache.package
This is the single most effective first step according to the Sims 4 community. The localthumbcache.package file stores thumbnail data for your saves, mods, and gallery items. When it gets corrupted which happens often after patches it can block the game from loading entirely.
Close The Sims 4 completely. Open File Explorer and go to Documents > Electronic Arts > The Sims 4. Find the file named localthumbcache.package, select it, and press Delete. Do not worry; the game will generate a fresh, clean version the next time you launch. Many players on EA Forums report that this alone fixes Error 109, especially when the error appeared right after a game update.
After deleting it, launch the game and try loading your save. If the error is gone, you are done. If it persists, move to the next step.
2. Update Your Game to the Latest Version
Running an outdated version of The Sims 4 is asking for trouble. Patches do not just add content; they fix file-handling bugs that can trigger Error 109. The catch is that a new patch can also break your mods, so always update the game first, then test before re-enabling any custom content.
On PC via the EA App, open the client, go to My Library, find The Sims 4, and click the three dots next to it. If an update is available, you will see an option to download it. On Steam, right-click The Sims 4 in your Library, choose Properties, go to Updates, and make sure automatic updates are enabled. If you are on a console, the update should queue automatically when connected online, but you can force a check by highlighting the game tile, pressing the Options or Menu button, and selecting Check for Update.
Once the update finishes, launch the game and test a save before doing anything else. If Error 109 still shows up, your mods or cache are likely the problem, not the game itself.
3. Remove Corrupted Save Files
Sometimes the save file itself is damaged beyond what a cache clear can fix. The Sims 4 actually marks corrupted saves with a .bad extension, which makes them easy to spot if you know where to look.
Navigate to Documents > Electronic Arts > The Sims 4 > saves. Look for any files ending in .bad. These are the corrupted saves causing Error 109. Delete them. You should also see backup versions with extensions like .ver1, .ver2, or .ver3. These are automatic backups the game creates. If your main save is failing, try renaming the most recent backup by removing the .ver extension so the game treats it as the primary save.
Always keep a copy of the entire saves folder on your desktop or an external drive before deleting anything. That way, if a backup does not work, you can restore the original state and try a different approach.
4. Disable or Update Third-Party Mods and Custom Content
Mods and custom content are the number one cause of Error 109 after patches. When EA updates the game, script mods and tuning overrides that rely on old code paths become incompatible. The game tries to load them, fails, and throws Error 109 instead of starting your save.
To test whether mods are the culprit, move your entire Mods folder out of Documents > Electronic Arts > The Sims 4 and place it on your desktop. Launch the game. If it loads without Error 109, you have confirmed that a mod or piece of CC is broken. Do not just dump everything back in. Instead, use the 50/50 method to find the exact problem file.
Here is how the 50/50 method works. Split your mods into two halves. Put the first half back into the Mods folder and launch the game. If Error 109 returns, the broken mod is in that half. If it does not, the problem is in the other half. Take the problematic half and split it again. Repeat this process until you isolate the single file or small group of files causing the crash. It takes time, but it is far faster than testing every mod one by one. Reddit users consistently call this the most reliable way to hunt down broken content after a patch.
Once you find the broken mod, delete it and check the creator’s website for an updated version. Many modders release compatibility patches within days of a Sims 4 update. If the creator has abandoned the mod, you will need to remove it permanently or find a replacement.
For a faster diagnosis, you can also use community tools like BetterExceptions or Sims 4 Tray Importer. BetterExceptions scans your Mods folder and flags files with invalid tuning or script errors that are known to cause crashes. It does not catch everything, but it can cut your 50/50 search time dramatically by pointing you toward the most likely culprits first.
5. Repair Your Sims 4 Game via EA App or Steam
If deleting the cache and removing mods did not solve the issue, the game files themselves may be corrupted. Both the EA App and Steam offer built-in repair tools that scan for missing or damaged files and replace them automatically.
On the EA App, go to My Library, click the three dots next to The Sims 4, and select Repair. The client will verify every file and re-download anything that does not match the official checksum. On Steam, right-click The Sims 4 in your Library, choose Properties, navigate to Installed Files, and click Verify Integrity of Game Files. Steam will run a similar check and fix any discrepancies.
Important: delete localthumbcache.package before you start the repair. If you leave a corrupted cache in place, the repair tool might not catch it, and you will still see Error 109 after the process finishes. This small step makes a big difference, and it is the exact order that veteran players on EA Forums recommend.
The repair can take anywhere from five minutes to half an hour depending on your internet speed and how many packs you own. Let it finish completely before launching the game.
6. Clear Cache Files from Your Sims 4 Folder
Beyond localthumbcache.package, The Sims 4 generates several other cache folders that can accumulate stale data. Clearing all of them is a safe way to eliminate hidden conflicts.
Close the game, then go to Documents > Electronic Arts > The Sims 4. Delete the following items: localthumbcache.package, the cache folder, the cachestr folder, and the onlinethumbnailcache folder. You can also delete the contents of the lastException.txt and lastUIException.txt files if they exist, though simply clearing the cache folders is usually enough.
None of these folders contain your saves or mods. They are purely temporary data. The game will rebuild them on the next launch, often with better stability. If you have never cleared your cache before, you might be surprised how much junk has built up over months or years of play.
7. Perform a Clean Boot of Your Computer
Background applications can interfere with The Sims 4 in ways that are hard to predict. Antivirus software, overlay tools, and even some cloud sync services have been reported to cause file-access conflicts that lead to Error 109.
To rule this out, perform a clean boot on Windows. Press Win + R, type msconfig, and press Enter. In the System Configuration window, go to the Services tab, check Hide all Microsoft services, then click Disable all. Switch to the Startup tab, click Open Task Manager, and disable every startup item. Restart your computer and try launching The Sims 4. If the error disappears, re-enable services and startup items in small groups until you find the one causing the conflict.
This is a more advanced step, so only try it if the simpler fixes above have failed. Most players will not need to go this far.
8. Run the Game as an Administrator
Windows permission restrictions can prevent The Sims 4 from accessing its own files in the Documents folder, which sometimes triggers Error 109. Running the game with elevated rights can eliminate that barrier.
Find your game executable. If you play through the EA App, the file is usually located in C:\Program Files\EA Games\The Sims 4\Game\Bin or TS4_x64.exe. Right-click it, choose Properties, go to the Compatibility tab, and check Run this program as an administrator. Click Apply and OK. You can also set this through the EA App by going to My Library, clicking the three dots next to The Sims 4, and looking for advanced launch options. On Steam, you can add the same flag via the launch options in Properties.
Launch the game and test your save. If administrator rights fix the issue, you may want to adjust the folder permissions for Documents > Electronic Arts so you do not need elevated access every time.
9. Reinstall Expansion Packs or Stuff Packs
In rare cases, a specific expansion or stuff pack has corrupted installation files that the general repair tool misses. This is more likely if you only see Error 109 when loading a save that uses content from a particular pack, such as a world or item set introduced in a recent expansion.
On the EA App, go to My Library, find The Sims 4, click Manage, and look at your installed packs. You can uninstall individual packs from here. On Steam, right-click The Sims 4, choose Properties, go to DLC, and uncheck the pack you want to reinstall. Once uninstalled, restart the client and reinstall the pack. This forces a fresh download of that pack’s files without touching your main game install or your saves.
This is a niche fix. Most players will solve Error 109 long before reaching this step. Only try it if you have strong evidence that one specific pack is involved.
10. Verify That Your PC Meets the Game’s System Requirements
Although Error 109 is almost always a file or mod issue, severely underpowered hardware can contribute to loading failures. If your computer is struggling to allocate memory or process game assets, the load process can time out and return an error.
The Sims 4 minimum requirements are modest by 2026 standards: a 1.8 GHz Intel Core 2 Duo or equivalent, 4 GB RAM, and a DirectX 9.0c compatible video card. However, with all the free content updates and expansion packs released since the game went free-to-play, the effective requirements have crept up. If you are running the game on a machine that barely met the specs in 2014, you may now experience issues that did not appear before.
Press Windows key + X and select System to view your processor and RAM. For your graphics card, right-click the desktop and choose NVIDIA Control Panel, AMD Radeon Software, or Intel Graphics Settings depending on your GPU. Compare your specs against the official requirements on EA’s website. If you are below the line, consider lowering in-game graphics settings or upgrading your RAM before troubleshooting further.
11. Contact EA Support Assistance
If you have worked through every fix above and Error 109 still blocks your game, it is time to escalate. EA Support can look at your account, check for server-side issues, and sometimes identify problems that local troubleshooting cannot catch.
Start at the EA Help Center at help.ea.com. Select Help with a game, search for The Sims 4, and choose Technical Support. Before contacting an agent, browse the community forums. Many Error 109 threads have solutions posted by EA Community Managers or experienced players that may not have made it into official articles yet. If you still need direct help, use the live chat or request a callback. Be ready to describe exactly which error suffix you are seeing, which fixes you have already tried, and whether the issue started after a patch.
Keep your backup saves handy. In extreme cases, an EA agent may suggest a full reinstall, and having your saves backed up will prevent any loss of progress.
How to Fix Sims 4 Error Code 109 on Console (PS5, PS4, Xbox)
Console players have fewer troubleshooting options than PC players because there is no Mods folder to clear and no cache files to delete manually. However, Error 109 does appear on PS5, PS4, and Xbox, usually after a game update or when cloud sync conflicts occur.
On PlayStation, the first step is to check for a system software update. Go to Settings > System Software Update and install anything pending. Then, highlight The Sims 4 on your home screen, press the Options button, and select Check for Update. If the error persists, go to Settings > Saved Data and Game/App Settings > Saved Data (PS5) or Saved Data Management (PS4), find The Sims 4, and delete the local saved data. Do not worry; if you have PS Plus cloud saves enabled, you can download them again afterward. This forces the game to rebuild its local files from scratch.
On Xbox, press the Xbox button, go to My games & apps, highlight The Sims 4, press the Menu button, and select Manage game and add-ons. From there, you can clear the reserved space, which acts similarly to clearing cache on PC. Then, fully power cycle your console by holding the power button for ten seconds until it shuts down, unplugging it for thirty seconds, and turning it back on. After the restart, launch the game and test.
If console fixes fail, the issue may be on EA’s server side. Check the EA Help Twitter account or Downdetector for outage reports. Console errors that affect multiple players at once are often patch-related and resolve after a hotfix.
Frequently Asked Questions
How to fix error code 109 in Sims 4?
Start by deleting the localthumbcache.package file from Documents > Electronic Arts > The Sims 4. Then update your game, remove outdated mods, and repair the game via the EA App or Steam. If the error persists, use the 50/50 method to find broken custom content.
What is error code 109 on EA app?
EC:109 on the EA App is a launcher connection error, not the same as in-game Sims 4 Error Code 109. If you see EC:109, restart the EA App or check your internet connection. In-game Error 109 is a file-loading issue caused by mods, cache, or corrupted saves.
Why am I getting an error code on Sims 4?
Error Code 109 usually appears because outdated mods or custom content conflict with a recent game patch. It can also be caused by a corrupted localthumbcache.package, damaged save files, or incomplete game repairs after an update.
Why does my Sims keep saying the game failed to load?
The game failed to load message with Error 109 means the game cannot read your save or mod data. Delete localthumbcache.package, move your Mods folder out temporarily, and test again. If it loads without mods, a broken script mod or tuning override is the cause.
Does Sims 4 error 109 mean corrupted save?
Not always. Error 109 can come from cache corruption or broken mods even when the save itself is fine. However, if you see .bad files in your saves folder, those saves are corrupted and should be deleted. Try loading a backup with the .ver extension removed.
Conclusion
Sims 4 Error Code 109 is annoying, but it is rarely permanent. In 2026, the most reliable fixes are deleting localthumbcache.package, removing outdated mods with the 50/50 method, and repairing the game through the EA App or Steam. Always back up your saves before you start, and test the game after each step so you know exactly what worked.
If you play on console, your options are narrower, but power cycling and clearing reserved space or local saved data will resolve most post-patch loading issues. And if nothing works, EA Support and the community forums remain excellent resources. The key takeaway is patience: Error 109 looks scary, but it is almost always a mod or cache conflict that you can sort out in under an hour. Keep your custom content updated, clear your cache regularly, and you will spend far less time troubleshooting and far more time actually playing.