Thank you for your reply. The problem was indeed that the DNS address had been changed on the client machine, even though Windows is under Active Directory, making it impossible to update the Group Policy Object (GPO).

Problem solved!

Hello,

I'm not sure if I'm in the right section, but as the saying goes, nothing ventured, nothing gained.

I've known about WAPT for a while and decided to use it a week ago.

Here's the problem: my package installations don't start when Windows shuts down...