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Why does my Windows 11 taskbar freeze after notifications and how do I fix it?
On December 1, 2025, Microsoft released Preview Update KB5070311 for Windows 11 versions 24H2 and 25H2. While originally targeted for late November, this optional release underwent additional refinement to ensure stability. You should consider installing this package manually if you are currently experiencing specific performance disruptions, particularly regarding file indexing or system responsiveness. It serves as a bridge to the mandatory “Patch Tuesday” update expected later in the month.
Critical Performance and Stability Fixes
This update prioritizes functional repairs over cosmetic changes. The following resolutions address high-impact bugs affecting daily workflows:
- Network File Search Restoration: The most urgent fix addresses the Search Indexer. Previous configurations caused File Explorer to fail when searching SMB (Server Message Block) shares. If your organization relies on network storage, this patch restores the ability to locate files on remote servers efficiently.
- Taskbar Responsiveness: A conflict within explorer.exe previously caused the taskbar to freeze following specific system notifications. This update stabilizes the process, ensuring the desktop interface remains interactive after alerts appear.
- System Process Stability: The update patches a vulnerability in the Local Security Authority Subsystem Service (LSASS). Prior to this fix, access violations could force LSASS to crash, leading to random reboots or authentication failures.
- Settings App Crashes: Users attempting to configure privacy permissions—specifically for the Microphone, Camera, or Location—experienced immediate application closures. Navigation to these pages is now stable.
Feature Evolution and AI Integration
Microsoft is utilizing a gradual rollout strategy for new feature implementation. Depending on your region and configuration, you may see the following enhancements immediately or in the coming weeks:
Enhanced Settings Search
An integrated AI agent now manages the Settings search menu. This upgrade increases the density of displayed results and introduces a scroll bar, allowing you to review options faster without refining your search terms.
Streamlined Configuration
The “Recommended Settings” section now behaves more intelligently. An inline agent displays options based on your recently modified preferences, allowing for rapid adjustments. Additionally, if a specific setting cannot be changed, the system now presents a dialog box explaining the restriction and offering alternative configuration paths.