I have window server 2012 and i created share folder with ntfs permission. i gave read and write permission to all user in department wise and it was working but i dont know what happened suddenly it says access denied contact your admin while saving the changes but it has read write permission but why user not able to take that permission which is already assigned and am facing this issue frequently so kindly help me to get rid out this.
Are you using MS Office apps to save in these folders??
Pretty sure the best course of action if you are is to give users modify permissions as the Office apps typically create temp files in the folders that they run in and are required to delete them when they are done, i will have a link somewhere that i got this info as we had the same issues.