Crash At Start After Installing Update

[Guillo_89 0]

I have a problem, a big one. After I installed the latest update (1.0.1.7) I was about to start Team Fortress 2 and after the loading image, it returns to windows and displays an error: Engine Error - No permission to run 'tf'

Please someone help me, I don't know what to do. (The only solution I can think of is reinstalling everything, but I won't be able to install the latest update)

[Amir 0]

make sure you are on your computer administerator account

if you are then

go to your firewall and add that EXE as an exception

[Guillo_89 0]

I don't think it's a firewall issue (I have the windows firewall disallowed), but thanks though. I think I found the problem, I donwloaded an update but the guy who uploaded it forgot to mention that it wouldn't let you play team fortres and have Steam opened at the same time. So I installed without knowing that. I think I'll just have to wait for the proper update to come out.

If someone has a way to play the game with the 1.7 version and steam opened at the same time, please let me know