UE4 won't open but have high CPU usage

This is an weird issue i am facing.

UE4 is not opening but in task manager i can see high cpu usage. I am using 4.17 but this also happened with 4.16.
I am using Comodo firewall. somehow it seem to be related.

I can’t reproduce this everytime though. Sometime restarting PC seems to work sometime it will just happen.

@MJBrune, no it is not open. i am trying to open it. Also the UE4 splash screens won’t show.

I left it for 20 minutes and the CPU usage was still high but no disk usage.

i am just opening UE4. not the project.

This might be for a lot of reasons. Depends on what you are opening. Is this a full project or is this just trying to open the new project screen? You could be building textures.

are you opening a project or a new project screen? if you run with -log what shows?

didn’t know about the -log parameter :expressionless: i will use it when this issue occurs again. right now UE4 works fine as i restarted my pc

okay i just faced the issue again. it doesn’t matter even if i run with log because the log window won’t even show up. UE4 uses high cpu and no GUI shows up :confused:

Had Commodo Firewall to got rid of it Never happend to me again. Turning it off temporarly does not solve the Problem. Tried absolutly everything I could inside Commodo to fix the issue. Nothing worked except uninstall.

Yeah i noticed after installing Comodo firewall UE4 seems to have this isssue. :confused:
I can’t uninstall it since i need it.
I have everything disabled including HIPS but somehow it still seems to interfare with UE4.
I have added UE4 folder as a exclusion in the HIPS ruleset. I have to see if this solves it.

Been there tried all of that (and more). Nothing worked except nuking it. For me the issue definitly came from comodo. Maybe try a alternative Firewall if you need one that badly.