What should I do if steam fails to launch a game?

I've installed a few games everything worked flawless. After a while I couldn't any longer start Metro 2033. A message popup appears saying that Metro 2033 is launched the popup disappears and the game is NOT started.

What I've already tried:

  1. Reboot
  2. Reinstall the game -> Still having this issue.
  3. Activate the game again -> Message: User already owns this product.
  4. Checked the logfiles -> No hint about a crash or error messages.
  5. Steam Won't Launch - CMultifieldBlob(pSerialized)
  6. Opened a ticket on the steam support site -> No response yet.

Does anyone have an idea how I could solve this issue?

What if more games become defective?

EDIT:

Now I see messages like this in C:\Program Files (x86)\Steam\debug.log

[0119/095917:ERROR:backend_impl.cc(2123)] Corrupt Index file
[0119/095917:ERROR:cache_util_win.cc(48)] Unable to move the cache: 5
[0119/095917:ERROR:backend_impl.cc(134)] Unable to move cache folder
[0119/095917:ERROR:backend_impl.cc(264)] Unable to create cache
  1. Verified integrity of game cache

This appears to be a Steam problem, backup your data and reinstall Steam.


You should try the following steps

  • Close Steam
  • Go to your steam installation folder
  • Delete the ClientRegistry.blob file
  • Start Steam again

Steam should show an upate message. After that your game should work again

ps: you can rename the file to ClientRegistry.oldblob or something similiar if you dont want to delete it

If it's still not working try the following article in Steam Support section

This game is currently unavailable