Apple Releases macOS 26.5.1 With Fix for M5 Mac Shutdown Bug

Apple has released macOS Tahoe 26.5.1 for Mac users. This is a small update, but it brings an important fix for a shutdown problem affecting some M5 Macs in enterprise setups. The update arrives a few weeks after macOS 26.5 and appears focused on stability rather than new features. For most regular Mac users, this update may not change much on the surface. Still, it is worth installing because small macOS updates often improve reliability, even when Apple lists only one main fix. How to update You can install the update directly from System Settings: Click the Apple menu in the top-left corner. Open System Settings. Go to General. Click Software Update. Wait for your Mac to check for updates. Click Update Now if macOS 26.5.1 appears. Make sure your Mac has enough battery or is plugged in before starting the update. It is also a good idea to back up important files before installing any system update. All the changes macOS 26.5.1 fixes an issue where enterprise users with M5 Macs could face unexpected shutdowns while using certain content filtering network extensions. This mainly matters for managed Macs used in schools, offices, and company networks where filtering tools are often installed for security or network control. Apple has not listed any major new features in this release, so the update is best seen as a focused bug fix for stability. This update also comes as Apple prepares to show its next major macOS version at WWDC 2026 on June 8, so macOS 26.5.1 may be one of the final maintenance updates before the next big software cycle begins. If you’ve already installed the update, let us know your experience in the comments.