You must have both the base game and the expansion installed. If you are using old CDs, install them normally. If you have the modern Warcraft III: Reforged client, you will need to downgrade to 1.26a, which is a different process (typically involving "old version" folders).

Open the Maps folder. Create a new subfolder named Download if it does not already exist. Move the downloaded .w3x map file into this Download folder. Step 4: Configure Multiplayer and LAN Clients

This paper provides a procedural methodology for the installation and execution of Defense of the Ancients (DotA) version 6.26 on the Warcraft III: The Frozen Throne platform. As early iterations of Multiplayer Online Battle Arena (MOBA) games become subjects of retrospective gaming and historical analysis, the preservation of specific version histories—such as the v6.x series—is critical. This document outlines the necessary file dependencies, directory structuring, and troubleshooting procedures required to successfully operate this legacy software on modern and period-appropriate hardware.

This usually occurs due to high-resolution widescreen monitors. Patch 1.26 was released before ultra-wide resolutions were common. To fix this, you can force the game into Windowed Mode. Go to your shortcut target and add -window at the end of the path (e.g., "...\Frozen Throne.exe" -window ).

While Garena is mostly gone, Ranked Gaming Client (RGC) is one of the few places that still supports 1.26a competitive play.