Updating windows update
To enable this, open Settings Advanced options and set a check mark next to Defer upgrades.To determine for how long the upgrades will be deferred, you’ll have to head into the Group Policy Editor (see above). You should only ever defer (security) updates, when you can’t risk Patch Tuesday to interrupt or jeopardize an important project.
because it offers additional features in regards to controlling Windows Update.
Otherwise, you could find Windows caught in what might appear to be an infinite update cycle as you return from your lunch break.