UnrealLightmass.exe Is Open Without UE4 Open; Cannot End Process

It’s been about 2 hours since I last used UE4, and when looking at my processes in task manager, there is a process called UnrealLightmass.exe and it’s at the top for most memory consumption.

When I try to end the process it states “Access is denied”.

Is there any way to end this process?

I’ve Windows 7 Ultimate.

That’s odd, restart your computer if it won’t allow you to end the process.

Yeah a restart worked. It was odd tbh. I’ll post here if it ever happens to me again.