Shadow problem

When I rebuild the lighting in my scene it destroys the shadows that were there beforehand, any idea why? Thanks!

Before lighting rebuild:

After lighting rebuild:

Most likely lightmap resolution is too low.

How do I turn it up? Thanks!

Well I turned the “Min Lightmap Resolution” thing up and that didn’t change anything, made it worse I think…

Minimum lightmap resolution is part of the automatic lightmap generation settings, it doesn’t change the actual lightmap resolution. The lightmap resolution is in the section above that.

Yeah I still can’t find whatever it is I need to do to stop this from happening…