How to Fix Baldur’s Gate 3 Data Mismatch Error

Mod Farewell: If you're using mods, temporarily disable or uninstall them. Mods can sometimes conflict with the main game, causing data mismatches.

Verify Your Files: Both Steam and GOG Galaxy offer a "Verify Game Files" function. This ensures all game files are in tip-top shape. Here's how (specific instructions might vary slightly):

Steam: Right-click Baldur's Gate 3 in your Steam library, go to "Properties" > "Local Files" > "Verify Integrity of Game Files..."

GOG Galaxy: Select Baldur's Gate 3, click "Configure" > "Verify / Repair"

Early Access Save Scouring: If you've played Baldur's Gate 3 in Early Access, consider deleting those save files. Sometimes, outdated saves can cause conflicts. Back them up first if you're sentimental!

Unexpected File Foes: Search your Baldur's Gate 3 installation folder for any unusual files that might be causing issues. Look for anything not officially part of the game.

Larian Studios Folder Rename: Try renaming the "Larian Studios" folder within your Baldur's Gate 3 directory. This forces the game to recreate the folder with fresh data. Remember to rename it back if this doesn't work.

Cache Clearing Crusade: Delete the Baldur's Gate 3 cache files. These can sometimes become corrupted and lead to errors. Consult online resources for specific instructions on locating the cache folder based on your launcher.

Reinstall the Hero's Journey: If all else fails, consider reinstalling Baldur's Gate 3. This is a nuclear option, so back up your saves if possible.

Summon the Support Cavalry: If none of these solutions banish the data mismatch error, seek aid from the Baldur's Gate 3 support team. They may have additional insights to vanquish this foe.

With perseverance, you'll be back to exploring the Forgotten Realms in no time! Good luck, adventurer!