Run Steam in Compatibility Mode First, try running Steam in compatibility mode, which some players confirm can fix the “ Failed to load SteamUI.dll. ” Applying this possible resolution sets a program ...

Click Apply > OK to set the new administrator option. Opt-Out of the Steam Beta Participation Have you opted into the Steam Beta? If so, try opting out of Steam Beta because that’s not a stable ...

Click Yes when a message shows up asking if to allow the app to make changes on your device. Sign in to your account to verify if the problem is fixed. Fix #2: Re-register Steamui.dll on your ...

Open Steam. Open the Steam preferences by clicking on the Steam icon in the upper left corner of the Steam app and select Settings or Preferences. In the Setting window, navigate to the Download tab ...

To fix 'Failed to load steamui.dll' when opening Steam on Windows PC, re-register steamui.dll, clear Steam Download Cache or delete this DLL file.

Replace the steam_api (64).dll (libsteam_api.so on linux) from the game with mine. For linux make sure that if the original api is 32 bit you use a 32 bit build and if it's 64 bit you use a 64 bit ...