The free-to-play survival shooter Undawn is now available on mobile and PC, but some users are reporting problems booting up the game on Steam. This guide on How To Fix Error Code 126 In Undawn will tell you how to fix the error regarding the tdatamaster.dll being missing.
Firstly, the tdatamaster.dll file is not actually missing. If you check the games files you will find the file in the directory. You can attempt to repair or redownload on Steam but in our experience, this did not fix the problem. The issue appears to be related to MS Visual Studio.
When you attempt to launch the game via Steam the error reads:
Error Code : Failed to load tdatamaster.dll, the file is missing or corrupt! Trying to reinstall the program may fix the problem.
How To Fix Error Code 126 In Undawn tdatamaster.dll
After suffering this problem ourselves we stumbled upon a YouTube video from Bora Lá Jogar. No English audio is available but the subtitles provide enough information to solve the problem. In the video Bora Lá Jogar links to several files that needed to be downloaded in order to fix the issue.
Warning: Download these are your own risk. We have downloaded and used them ourselves, and it fixed the problem. No viruses or Malware was detected. However, we cannot guarantee they are safe to download.
You need to download the following files. If you have the option to “Install” the files, it means they are not on your PC and need to be installed. If it’s already on your PC, which is likely the case for most of it, you will need to “Repair”. Go through each file individually and repeat the process and it should fix the Error Code 126 (tdatamaster.dll) In Undawn.
Visual Studio 2015, 2017, 2019, and 2022 (64 Bit – 32 Bit)
Visual Studio 2013 (VC++ 12.0) (64 Bit – 32 Bit)
Visual Studio 2012 (VC++ 11.0) Update (64 Bit – 32 Bit)
Visual Studio 2010 (VC++ 10.0) SP1 (64 Bit – 32 Bit)
Once you have downloaded and either installed or repaired each of those files, verity the integrity of the files on Steam via Undawn – Properties – Installed Files, and you should be up and running right away.