Can't rebuild lighting

Whenever I try to rebuild lighting, it goes through the whole process without any error messages but still says I need to rebuild the lighting. This issue started in 4.19 and was never resolved upon updating. Reddit and UE4 bug submission support have been of no help. Here’s a full list of what I’ve tried thus far:

Updating the project,
Changing lighting quality back and forth,
Migrating everything to a separate project,
Copy/pasting level contents to another level,
Deleting every single light and starting over.
Renaming every duplicate object

So far nothing is working, and my project will likely have to be shelved indefinitely because of it. Is there any fix? Does anyone wanna check out my project and see what could be going on? Please! I can’t do anything until this is solved!

If you are rocking windows 10 load up task manager, If it says your disk is at 100% (before you even start building your lighting) it will take an eternity to write in the lighting. That likely isn’t the problem but that is what happened to me, likely culprits are superfetch, onedrive, skype, task scheduler and windows search. If that is the case I saved you a google search https://whatsabyte.com/windows/fix-100-disk-usage-windows-10/