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This tends to make things more streamlined as then the launcher won't have to do a disc check (which would be the "Connecting account " screen on Steam) and installs have less chance of not happening. It may be easier to launch the game via Steam and leave it on the launcher before prompting any downloads or installations.Unfortunately there is no fix for Internet Explorer which we can list here at this time, as "Sims3Launcher" is already attributed to the correct directory via the registry, which shouldn't be edited unless you are absolutely sure of what you are doing.
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Google Chrome automatically finds "Sims3Launcher" from the Steam directory after initiating the download process via The Sims 3 Store - you don't need to do anything else on your part. Now you should be able to download from the Store via your browser and it will automatically launch from the correct directory. Then click the box to make this the default. There will be 3 launchers listed: S3Launcher, Sims3Launcher, and Sims3LauncherW.The path for this (on Windows 7 64-bit) is "C:\Program Files (x86)\Steam\steamapps\common\The Sims 3\Game\Bin" - a 32-bit system would be the same except substitute "Program Files (x86)" with just "Program Files".The correct launcher you need is located in your Steam folder. It will already be selected to use Sims3Launcher, but its assuming you have the retail version, which uses a different file path to the Steam version. Go into Tools > Options > Applications and find "sims3" in the list, and right next to it under 'Actions' click on it to see the dropdown menu.A dropdown menu should appear, click yes to accept program for the specific protocol.Javascript:navigator.registerProtocolHandler('sims3',' ','Sims3Launcher') " and press enter On the same window/tab as this page, replace the contents of the address bar with ".Go to Mozilla's help page for this issue.
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