Windows 10 kept prompting me for a set of credentials and password to access my LS210D NAS, but continue to deny me access. I must have spent a couple of days trying the various solutions posted on the web to figure this out. Then just before I was going to go a fresh Windows 10 reinstall, I logged into the system as a different user. Lo and behold, I found I was able to access the NAS without issue! I deleted the windows account for the other user, added it again and everything worked fine. I don't recall ever having problems like these with Windows 7!