I have been seeing issues where Windows seems to "reset" permissions on files after I had set them. I have seen this in various versions of Windows. I'm sorry I don't have much more information. The files that are changing are sql DB files. Is there anything that would cause permissions to erase after adding them? I just recently seen this happen on win 7 pro x64. What will happen is i will set permissions on sql DB files. I set users and everyone to full control and domain users, network users, and everyone to full control on a domain enviorment. Later on down the road, those permissions i set are gone and the users and everyone groups i added do not show up as having permissions on the file.