hl2.exe stops working on TF2 startup

[Wahoo]

What to do to fix it? I validated the files and all of that and I wont reinstall, because this only happens sometimes. Otherwise it works.

[girdurloins]

I think this is something that happens to most people on occasion. Try looking at support to troubleshoot if you like.
https://support.steampowered.com/kb_article.php?ref=9402-MKEN-1517

[Wahoo]

I was trying out some stuff and found out that you have to manually end the hl2.exe process to run tf2