I know this is a popular topic, I've searched through a lot of these articles and haven't found an answer.
Sometimes I have access, then after a reboot, I don't have access. Most of the time I don't have access with the message "Windows cannot access <folder>. You do not have permission to access <folder>. Contact your network administrator to request access."
The common recommended solution is to make sure that my login name on the client machine (win7 btw) is the same as the login name registered on WHS2011. It is. The password is the same as well. There doesn't seem to be any reason why the folders are inaccessible. Any ideas?