Question: There are many operating systems in the company's LAN, including XP, Vista, and Windows 7. Now I have encountered a problem, that is, XP can see the shared drive in Network Places, but when accessing it, it prompts that there is no permission. Since the shared drive cannot use the wizard, only advanced sharing can be used. However, the "Everyone" permission has been added to the advanced sharing, so why does it still say that there is no permission? Please give me some advice!
Answer: Because you overlooked one point - in addition to assigning corresponding permissions, the share is also subject to the NTFS permissions of the file system. Therefore, the corresponding NTFS permissions must be added to the security tab of the drive. Drives formatted under Windows 7/Vista and the following directories do not have "Everyone" and "Guest" permissions by default. However, since the permissions of NTFS will be automatically matched and updated when sharing through the wizard, there will be no problem with generally shared folders.
The default permissions for a drive formatted under Windows 7/Vista are: Authenticated Users (not available in XP); System Administrators (Administrator Group); Users (Restricted User Group). The default permissions of XP are: Administrators (administrator group); CreatorOwner (the owner of the created folder, Vista does not have this); Everyone (the drive under XP has read-only permissions by default).
One of the main differences is the CreatorOwner (owner). The owner of a folder created under XP is the specific user who created the folder, so after reinstalling NTFS on a folder with configured permissions, unknown accounts often appear in the form of SIDs. The default owner of Windows 7/Vista is this group. For example, if you are an administrator, the owner of the folder you create is the Administrators group. Therefore, folders created under Windows 7/Vista do not have the corresponding permissions of CreatorOwner.
Having said so much, the solution is just one sentence: Just right-click on the shared folder you created or the system's NTFS-formatted hard disk and select "Properties → Security", and then select the "Group or User Name" column Click "Edit", then click "Add", enter "Everyone" in "Enter the object name to select" and click "OK". The XP machine can access the shared drives and folders you created in Windows 7/Vista.