Erreur fatale : impossible de charger les modules de la plateforme

Solved
Hello,
I have a big problem with Steam. On the first launch I got the following error message:
Failed to load platform modules
I launch Counter-Strike 1.6, it runs fine; I test Counter-Strike: Source and then a window opens with Counter-Strike: Source loading, the window closes immediately and then the PC returns to the Desktop
There I go crazy because I formatted the machine, reinstalled Windows XP, reinstalled Steam, reinstalled Counter-Strike and all the HL² mods, updated all my PC drivers, DirectX 9.0c etc ...
In short I’m going nuts.
I have to play old wars on CS 1.6 and it’s been over a month since I last played Source.

My config:

Mozilla Firefox
Windows XP Home SP3
RAM: 1536 MB
IDE Seagate HDD: 160 GB
DirectX 9.0c
Graphics card: Sapphire HD 2600 XT 256 MB GDDR3 AGP x8
Processor: AMD Sempron 2800 XP

Thanks in advance for your valuable help.

37 answers

  1. Hi!
    I had the same problem:
    Steam update => unable to open.
    I deleted the files mss32_s.dll and steam.dll in program files/steam.
    I restarted Steam and it ran the full update again.
    Since then everything is fine.

    Maybe a bug during the update...
    208
    1. Thank you man, it works perfectly. And people, instead of formatting your PC, read the forums a bit; there are very simple answers without overthinking. Thanks, flootchel, just in case
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    2. Nice for me too!
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    3. thank you man, it’s perfect
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    4. Thank you! Your solution fixed the problem! In English-language sites, they propose another solution that doesn’t work.
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    5. Nickel, your solution, simple, effective and it works
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