I started having the tier0.dll missing error in the last few weeks following the big Windows update that came out in July. NobodySpecial181's recommended fix worked for me. Thank you for the suggestion!
I cant start the game. I did all the steps u wrote down. When I try to start the game, there is allways the same Error-Message with the file tier0.dll.
Maybe some of you could help me. Thanks a lot
WHOLLY bawls dude that fixed it... but never had to do that with any game before totally strange, BUT your advice helped THANK YOU!
February - last edited February
I used this solution for years and it worked, but in 2022 I can only get into the main menu. As soon as I press "Launch Multiplayer" I enter the multiplayer menu and crash to desktop. That is after complete uninstalls and registry wipe, reinstall etc.