Unity 2017 won't start, says could not create assemblies folder

Please help. Unity won’t work for me anymore. The newest version of Unity i just downloaded won’t work. It show the unity picture thing and stops there. When I try to open my old unity games it says cannot create assemblies folder out of disk space? I have plenty of disk space and it used to do this all the time on a slightly older version I used to had which was the reason I tried to update. Please help.

Hello Peterson,

If you are working with Visual Studio, close all visual studio files. Visual Studio that causes this access problem. I tried it consciously a few times. It happened to me when I opened visual studio from several different projects. If you close all visual studio files, the problem will be solved. Also if the problem persists, update / refresh visual studio. I hope it works