I purchased the game about a month ago and everything has been working fine till the last update (1.0.177).
Now, whenever I try to start the game it brings up the error: "Steam must be running to play this game", although I start the game THROUGH steam.
here's a picture of the error:
<a href="http://tinypic.com" target="_blank"><img src="http://i46.tinypic.com/2a66tfp.jpg" border="0" alt="Image and video hosting by TinyPic"></a>
It's the Steam Client Service. You'll find it in services.msc. It's set to manually run by default.
It's not always running, however. It normally only runs to monitor and update content (since that's what the service is designed to do), usually running on launch, then stopping after it does its initial scan of your local content to see if there are any updates available.
ClientRegistry.blob is a frequent culprit for a variety of Steam-related issues. Exit Steam, delete the ClientRegistry.blob file (located in the main Steam folder) and restart Steam. The blob file will be rebuilt.
Hello i got the same problem. "Steam must by running...", I do everythink, reinstall steam, game, clean the registry and instal steam and game, i bought game and i cant play. Before update 18/1 its working fine, with no problems. Ppl who use not legal copy its play without problems on mulitiplayer. IW team do somethink its in your buissines.
JusticeForAll, you should ask before you attack. I have the original version of the game, and I can show you the receipt if you don't believe (On second thought, it was in my wallet which was stolen, but i can take a picture of the original disc if you really want me to).
Torinir2, I tried what you said and it didn't work either. The Steam Client Service is not even on the list in Services.msc. If you have any other idea, I would be grateful to read it.
Thanks for the help.
I managed to get it to work!!!
What I did was:
1. Uninstalling both Steam and the game completely, including all the registry remains.
2. Reinstalling Steam on a DIFFERENT PATH.
3. Downloading the game via Steam.
NOTICE: Steam didn't restore my profile, so you better backup your Players folder located in: Steam\steamapps\common\call of duty modern warfare 2\.