Under Windows XP I never touched the permissions of a file/folder. I was happy with the way it worked. But recently I installed Windows 7 on a drive that previously hosted Windows XP (I installed over XP - XP is now gone). Now, some programs do not have 'read' and/or 'write' access to their own folders - and I am not talking about system folders like 'Program Files' but normal folders like 'C:\my data\my own folder\program folder'.
I see that for folders created under Windows XP I have some user groups that do not exist for 'normal' folders (folders created by me recently under Windows 7).
For example, for the Windows XP folder I have:
Creator owner System Account unknown(S-1-5-21 blablabla... Admins Users
For Windows 7 folders I have:
Authenticated users System Admins Users
How should I proceed?