Right-click the game in your Library > Properties > Installed Files > Verify integrity of game files .

If you see rld.dll listed, select it and choose or Allow on device .

Add the entire The Sims Medieval installation folder to your antivirus Exclusion/Exceptions list to prevent it from happening again. 2. Verify Game Files (Origin/EA App/Steam)

Navigate to your game’s folder (usually C:\Program Files (x86)\Electronic Arts\The Sims Medieval\Game\Bin ). Right-click TSM.exe and select Properties .

Go to My Collection , click the three dots on The Sims Medieval tile, and select Repair .

If you are playing a legitimate digital copy of the game, the file might simply be corrupted or deleted. Use the built-in repair tools provided by your game launcher:

This error usually indicates that a critical file is missing or has been blocked by your system. Here is a step-by-step guide to troubleshooting and fixing this issue so you can get back to your questing. 1. Check Your Antivirus Quarantine

The most common cause for the error is that Windows Defender or a third-party antivirus (like Avast or Norton) has flagged the file as a "false positive." Because this file interacts with the game’s executable to manage licensing or connectivity, security software often mistakes it for a threat. Open your Antivirus/Security Center . Check the Quarantine or Protection History section.

How to Fix the "rld.dll" Error in The Sims Medieval: A Complete Guide

Ensure you have the and 2012 (x86) redistributables installed, as older games like The Sims Medieval specifically require these versions. 4. Compatibility Mode and Admin Rights