Before you start WSUS Setup, you should make sure that the root of the drive
where WSUS stores updates has certain permissions. For example, security
tools may have been used to strip away default permissions from the disk
before the installation of WSUS. To manage this problem, use the following
procedure to check the drive and directories where updates are stored to
ensure permissions are set correctly.
1. Double-click My Computer, right-click the drive where updates are stored,
and then click Sharing and Security.
2. Ensure that the drive has read permissions for the built-in Users group
or NT Authority\Network Service.
3. Ensure that the root folder on the drive also has read permissions for NT
4. Ensure that the content directory itself (usually
<drivename>:\WSUS\WsusContent) has read permissions for NT Authority\Network