Important Update For Windows 7 RC (32bit) KB970789

The update is "KB970789" which fixes a compatibility issue in Windows 7 RC. This issue is only present in 32-bit version of Windows 7 RC build. Here is what it fixes:

In the English version of Windows 7 Release Candidate (build 7100) 32-bit Ultimate, the folder that is created as the root folder of the system drive (%SystemDrive%) is missing entries in its security descriptor. One effect of this problem is that standard users such as non-administrators cannot perform all operations to subfolders that are created directly under the root. Therefore, applications that reference folders under the root may not install successfully or may not uninstall successfully. Additionally, operations or applications that reference these folders may fail.

Furthermore, the missing security descriptor entries protect non-admin file operations directly under the root.

This problem occurs because the English version of Windows 7 Release Candidate 32-bit Ultimate incorrectly sets access control lists (ACLs) on the root.

Users are advised to immediately download and install this update using Windows Update.

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