The Enable Windows 11 KB5070311 update Windows 11 December 2025 Update (KB5070311) brings fresh features, security upgrades, and performance improvements. However, many users report that new features stay disabled or the update refuses to install. This guide helps you enable the new features and fix installation errors easily.
Below, you’ll see helpful emojis and GIF icons for better clarity and navigation.
💡 What’s New in Windows 11 KB5070311?
The update introduces several enhancements:
- Faster system boot time ⚡
- Improved Windows AI features 🤖
- Better security protections 🔐
- Updated system UI elements 🎨
If these features are missing on your PC, follow the steps below.
Enable New Features After Installing KB5070311
Even when the update installs successfully, new features may stay disabled. Here is how to enable them.
1.Turn On Windows Update Toggle
Go to Settings > Windows Update
Click on the Get the latest updates as soon as they’re available then
Restart your PC
2. Ensure You’re Running the Correct Build
Sometimes the OS installs the update but doesn’t activate new features.
- Press Win + R
- Type winver
- Check if you’re on the correct December 2025 build
If not, Windows may still be waiting to activate features.
📦 3. Install Optional Feature Updates
Windows often delivers new functions as feature on demand packages.
- Open Settings
- Go to System > Optional Features
- Install missing feature packs
This instantly unlocks hidden features.
❗ Fix KB5070311 Not Installing on Your PC
If the update refuses to install, freezes, or shows an error, use the methods below.
🛠️ 1. Restart Your PC & Try Again
Many update errors are temporary.
A quick restart refreshes Windows services.
📥 2. Clear Windows Update Cache
Corrupted cache files cause stubborn update failures.
- Press Win + X, open Terminal (Admin)
- Run these commands:
net stop wuauserv
net stop bits
- Delete everything inside this folder:
C:\Windows\SoftwareDistribution - Restart services:
net start wuauserv
net start bits
Try installing the update again.
🧰 3. Run Windows Update Troubleshooter
- Go to Settings > System > Troubleshoot
- Open Other troubleshooters
- Run Windows Update
This tool automatically repairs update-related problems.
🧹 4. Fix System Corruption (SFC/DISM)
Broken system files often block updates.
Run these commands:
sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth
Then reboot.
⬇️ 5. Install KB5070311 Manually
Download the update from the Microsoft Update Catalog.
Manual installation bypasses common update service errors.
💾 6. Ensure Your Disk Has Enough Free Space
Windows updates need 20–30 GB free for safe installation.
Delete unnecessary files or run Disk Cleanup.
Conclusion
The Enable Windows 11 KB5070311 update Windows 11 December 2025 Update adds useful features and boosts your PC’s security. If features remain disabled, enable them through optional updates or the “latest updates” toggle. If the update fails to install, the solutions above fix most issues quickly.
