I've been getting error messages for the past several weeks and I can't figure out why. I either get: "Working offline (Out of cloud storage)" or "OneNote can't sync your notes because your account is out of space" or "You no longer have permission to access this notebook / We'll sync again if permissions are restored" It's an amazing program when it works, until now! I've even deleted a lot of files out of it and it makes NO difference. In my apps, it says it contains 268MB only out of 5G