Mod edit: With the new patch today, we'd prefer if people posted their problems and solutions in one thread instead of a huge pile of them, cluttering up the forum.
If you're having a problem, please post in this thread, and those that know what to do can help you out.
I have searched this problem and have tried most fixes, but none of them have worked...
I've tried ending the Agent.exe process
I've tried deleting the folder in ProgramData
I've tried running it as Admin
I've tried restarting.
I've temporarily disabled ALL shields on Avast.
I don't know what else to do
I'm trying to patch up and when I get to the optimization part I get a popup that says
"Failed to read a required file. Please close all other applications, temporarily deactivate your anti-virus software, and try again."