When attempting to install PGP Desktop, you receive the error below and you are unable to install the software on a Windows 7 64-bit client computer.

Internal Error 2755. 1632

The NTFS file system permissions for the Administrators group or the System account no longer exist for the %SystemRoot%\Installer folder.

To resolve this issue, reset the NTFS permissions for the %SystemRoot%\Installer folder to include both the Administrators group and the System account:

1. In Windows Explorer, right-click the %SystemRoot%\Installer folder, and then click Properties.

Note: The %SystemRoot%\Installer folder has hidden system attributes. To view the %SystemRoot%\Installer folder:
 

• On the Tools menu, click Folder Options, and then click the View tab.
• Under Advance Settings, browse for Hidden Files and Folders and select Show hidden files and folders.
• Click to clear the Hide protected operating system files check box, and then click OK.

2. In the %SystemRoot%\Installer Properties dialog box, click the Security tab and verify the following permissions: 

• Administrators group - Full Control
• Everyone group - Read and Execute, List Folder, Contents and Read
• System account - Full Control

Applies To