The Windows 7 RC release was released shortly after Microsoft discovered a major vulnerability. Microsoft released its fix on Windows Update on Thursday, which was described as "Important". level. According to the technical documentation released by Microsoft, this bug affects the English version of 32-bit Windows 7 RC. Other language versions and all 64-bit versions are unaffected. Simply put, this problem is caused by Windows Installer incorrectly setting access control lists (ACLs) for the system driver root directory.
“ In the English version of Windows 7 RC (Build 7100) 32-bit Ultimate, the %SystemDrive% root folder security descriptor entry is lost, one of the consequences of which is standard users such as non-admin users Unable to perform operations on subfolders under this directory, therefore, applications in related folders cannot be successfully installed or uninstalled, and related operations and applications cannot be executed. ”
It is recommended that Windows 7 RC users open Windows Update to automatically download and install the patch. However, although the patch can solve the problem, it can't fix the installed application, and it doesn't work for the permissions folder.
It is recommended that users who do not have Windows 7 RC installed install this patch immediately after installation, instead of installing any applications or restoring backup data before installing this patch.
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