Blizzard Entertainment released recently on PTR servers the Patch 4.3.2. You can download it by going to your account page (USA or EU).

Once the installation is complete, launch the game. Now exit the PTR WoW.exe. Click the Launcher again. You might see it downloading again about 4-5GB.

After that’s done, if you have a 64-bit Operating System, you might wish to download the WoW PTR 64-bit client — just take in mind it is unsupported and it’s in testing for the first time. The 64-bit client is a separate download and it’s not part of the Launcher’s download. You must click the link provided below to download it via your internet browser.

Report all issues with the 64-bit version at the PTR forum, and if you wish to toggle back to 32-bit simply exit the game and access the game preferences option in the PTR Launcher.

A 64-bit client is now available for use with the 4.3.2 PTR. You can download it at the link below, unzip it into your PTR directory, and then run the executable to test it.

  • The 64-bit client is being distributed separately from the PTR as it is not yet supported for use with World of Warcraft.
  • This can only be used with the 4.3.2 PTR, it is not to be used with the live version of the game.
  • A Mac version is not available yet, though we are working on one and plan for it to be available in the near future.
  • The game’s built in voice chat does not currently work in the 64-bit client.


    If you encounter any issues while using the 64-bit version, please report your findings in the PTR bug report forum (, and return to using the 32-bit executable.

  • In addition, Nethaera recently explained the file optimization tech available for testing in the PTR 4.3.2

    Nethaera: With the 4.3.2 patch we’ll be testing some new file optimization tech. As you may be aware, with previous major expansion patches (2.0, 3.0, 4.0, etc.) we’ve carried out a time-consuming process to reorganize the game files currently installed on your hard drive to integrate all previous patch files, essentially ‘cleaning up’ what’s on your computer and reducing the full installation size. This process used to require an amount of free hard drive space double that of the entire installation size to complete, which is why we’ve reserved them for large expansion-sized patches.

    The new tech we’re testing with the 4.3.2 PTR will process these cleanups with no additional hard drive space required beyond what the patch is adding. Because of that you may see them appear more frequently with patches.

    While the cleanup is occurring you’ll see a specific message on the launcher informing you the process is currently taking place. If you encounter any issues with the new process please be sure to visit our support site at