I'm running a Windows Server 2012 Standard server at home, offering up several standard smb shares to a few client PCs around the home. Despite having changed nothing on the server I was, a little while ago, shocked to be told I did not have access to my music share. I logged on to the server to see that the only account that was granted access to the folders contained within the share was a single account from another machine (listed as a long meaningless string). I proceeded to restore the correct security settings to each folder and re-establish the share. What perplexes me though is that it has now happened again on a second share- unfortunately one that contains a much larger amount of data and subfolders. Can anyone offer an explanation as to how or why Windows is messing up my security settings, and perhaps offer a quick solution to resetting the security settings on a mass of subfolders? I have attempted to change the parent's settings and have it be set to all child objects, however I get an "access denied" error when attempting this- leading me to believe the only way around it is to set each folder individually. Any help would be greatly appreciated.