An Unreal process has crashed: Fornite Crash when trying to launch

Windows 10

Please don’t just close this and fob me off to FORNITE. This is a problem and I need help with it.

It is a crash report from the Unreal Engine 4 crash reporter: stating that “an unreal process has crashed”
it occurs when trying to launch FORNITE
I have reinstalled and repaired.
This was working prior to PC rebuild. Windows 10.

Help!

Hi there,

For Fortnite issues, please visit http://fortnitehelp.epicgames.com/
There you will find various troubleshooting articles as well as an Email Us button that you can use to get in touch with one of our support staff who can assist you further with this.

Any other concerns or questions regarding Fortnite should be directed here:
https://www.epicgames.com/fortnite/forums

Thank you

Hi,
confused…
can you explain why I need to go to FORTNITE help when the crash is reported by UE4 and the report states it is a UE process that has failed?
Cheers