My clients are not updating as scheduled. We have Active Directory and an isolated GPO that forces all computers to a specific SUS site and schedules the install to occur at a specific time. When viewing the Automatic Update pane on the client computer, it shows the correct settings; however, gpedit does not. Yes, we originally set this up on the client without a GPO but users were not honoring the policy. I have tested with and without a local configuration on the computer.
The Windows Update.log file shows it checking in with SUS but nothing ever happens. SUS is set up correctly as it was working fine in the manual configuration.
This sounds like an issue where the GPO settings are not applying correctly, for one reason or another. Run through the suggestions in the following link to understand the methods available for troubleshooting failed GPO settings: