Error upon loading assets, Saying access is denied (in my project save location)

Error upon loading assets, Saying access is denied (in my project save location) Sometimes I get the error when I’m just loading the Pro water, and I get an panhandled exception regarding access to where I am saving my project. Anyone have any ideas?

CSharp-firstpass.dll.mdb" is denied. I get this a lot on certain asset pack downloads, such as water pro, or the unity assets beta package