Microsoft releases KB5070311 update to fix a bunch of Windows 11 issues – and it has problems

Microsoft has managed to do it yet again. On the face of things, the KB5070311 preview update is a great update that not only addresses problems such as File Explorer freezing, but also introduces a raft of new Copilot features.

But, as you will have probably gathered, it does not end there. The KB5070311 preview update is another issue-riddled update, this time breaking dark mode in File Explorer.

Let’s start off with the good stuff. Microsoft has fixed various issues here, and provides the following list:

• [Notifications] Fixed: After the latest updates, explorer.exe might stop responding (leading to the taskbar becoming unresponsive) after certain notifications. 
• [Search indexer] Fixed: This update addresses an issue where File Explorer might not search certain SMB (Server Message Block) shares after the latest updates.
• [Security] Fixed: This update addresses an issue that affects Local Security Authority Subsystem Service (LSASS). LSASS could become unstable due…