Quick fix: Open Settings → Windows Update → Advanced options → Active hours. Set Active hours: pick time range when you use PC (e.g., 9 AM – 6 PM). Windows won’t reboot for updates during these hours. Or pick Adjust active hours automatically based on activity for smart detection.
Active hours are Windows’s way of avoiding update interruptions during work. Set them to your work hours; updates only install / reboot outside that range. Default 8 AM – 5 PM.
Affects: Windows 11.
Fix time: ~3 minutes.
What causes this need
Windows Update can reboot PC to apply updates. Without configuration: may happen during work hours. Active hours tells Windows to avoid reboots in that window. Updates download in background but reboot waits.
Method 1: Set active hours manually
The standard route.
- Open Settings → Windows Update → Advanced options.
- Find Active hours section.
- Pick Manually.
- Set Start time and End time.
- Maximum range: 18 hours (e.g., 6 AM – midnight). Minimum: 1 hour.
- Common settings: 9 AM – 6 PM for office work, 7 AM – 10 PM for full-day users.
- Apply.
- Windows won’t reboot for updates during this range.
- Updates queue for after hours.
- For shorter active hours: more update flexibility. Longer: less interruption.
This is the standard setup.
Method 2: Use automatic active hours
For smart detection.
- Same Settings page. Pick Automatically adjust active hours for this device based on activity.
- Windows monitors when you use PC. Auto-adjusts active hours.
- Pros: adapts to your schedule.
- Cons: may detect briefly idle as “not active.”
- For people with regular schedules: automatic works well.
- For shift workers: automatic may struggle. Manual better.
- For verifying: Settings shows current detected active hours.
This is the auto route.
Method 3: Pause updates during specific events
For temporary work / event protection.
- Open Settings → Windows Update.
- Find Pause updates dropdown.
- Pick: 1 week, 2 weeks, … up to 5 weeks.
- Updates fully paused (no download, no reboot).
- Useful for: presentations, conferences, deadlines.
- For longer pause: use Group Policy or registry.
- Group Policy:
gpedit.msc→ Computer Configuration → Administrative Templates → Windows Components → Windows Update → Manage end user experience → Configure auto-restart warnings. - Set Configure auto-restart warning notifications schedule for updates with custom values.
- For ensure prompts before restart: set notification times.
This is the pause route.
How to verify the fix worked
- Settings → Windows Update → Advanced options shows configured Active hours.
- Within active hours: no reboot prompts.
- Outside active hours: updates apply without notification.
- For pause: Settings shows “Updates paused for X weeks.”
If none of these work
If updates still reboot during active hours: Critical security update: Microsoft may force reboot regardless. Specific severity. For corporate-managed PCs: WSUS / Intune overrides active hours. Contact IT. For specific update types: some emergency / out-of-band updates ignore. For automatic restart deadline: even with active hours, after deadline Windows reboots. Settings → Windows Update → Advanced options → If you can’t restart now, we’ll keep trying for these days. Adjust. For chronic interruptions: Group Policy for stricter control. For server / business edition: Windows Update for Business policy more comprehensive. For full block: disable Windows Update service entirely (security risk; not recommended).
Bottom line: Settings → Windows Update → Advanced options → Active hours → manually set 8 AM – 6 PM (or your schedule). Updates respect range; reboots happen outside.