https://macfix.org/ MacFix https://macfix.org/battery/battery-draining-fast-not-sleeping/ https://macfix.org/battery/battery-draining-fast-not-sleeping/ Mac battery draining fast while you're actually using it is almost always one specific process. Find it with Energy Impact before assuming a hardware fault. Tue, 08 Sep 2026 00:00:00 GMT https://macfix.org/dev-setup/xcode-error-65-code-signing/ https://macfix.org/dev-setup/xcode-error-65-code-signing/ Xcode error 65 is a generic exit code, not a specific fault — on Apple Silicon it's usually an arm64 simulator architecture mismatch. Here's how to isolate it. Tue, 08 Sep 2026 00:00:00 GMT https://macfix.org/performance/mac-slow-after-macos-update/ https://macfix.org/performance/mac-slow-after-macos-update/ Mac slow after a macOS update is usually a temporary background job, not a fault. Confirm what's actually running, then know when to stop waiting. Tue, 08 Sep 2026 00:00:00 GMT https://macfix.org/performance/rosetta-2-slow-apps/ https://macfix.org/performance/rosetta-2-slow-apps/ Rosetta 2 costs real performance, but rarely enough to notice on ordinary apps. Confirm what's actually running translated before blaming Rosetta for slowness. Tue, 08 Sep 2026 00:00:00 GMT https://macfix.org/performance/windowserver-high-cpu/ https://macfix.org/performance/windowserver-high-cpu/ WindowServer high CPU on a Mac is almost always a display compositing problem — a scaled resolution or transparency effect, not a runaway process. Tue, 08 Sep 2026 00:00:00 GMT https://macfix.org/permissions/app-is-damaged-cant-be-opened/ https://macfix.org/permissions/app-is-damaged-cant-be-opened/ App is damaged and can't be opened usually means a broken code signature, not real file corruption. Confirm which it is before you re-download anything. Tue, 08 Sep 2026 00:00:00 GMT https://macfix.org/storage/external-drive-wont-mount/ https://macfix.org/storage/external-drive-wont-mount/ External drive won't mount on an Apple Silicon Mac is a file-system or power issue, not a security block. Confirm which, then fix it without reformatting first. Tue, 08 Sep 2026 00:00:00 GMT https://macfix.org/storage/system-data-huge/ https://macfix.org/storage/system-data-huge/ System Data showing 70GB or more in About This Mac is common and rarely explained well. Here is what is actually in it, and what is worth checking first. Tue, 08 Sep 2026 00:00:00 GMT https://macfix.org/updates/macos-update-stuck-failed-to-personalize/ https://macfix.org/updates/macos-update-stuck-failed-to-personalize/ Failed to personalize the software update is Apple Silicon's device-authorization step failing, usually from a dropped connection. Here's the fix order. Tue, 08 Sep 2026 00:00:00 GMT https://macfix.org/battery/pmset-assertions-prevent-sleep/ https://macfix.org/battery/pmset-assertions-prevent-sleep/ A Mac that won't sleep, even with the lid closed or after the display turns off, almost always has a process holding a power assertion. Here's how to find it. Mon, 07 Sep 2026 00:00:00 GMT https://macfix.org/dev-setup/xcode-command-line-tools-broken-after-update/ https://macfix.org/dev-setup/xcode-command-line-tools-broken-after-update/ Invalid active developer path in Terminal means the Xcode Command Line Tools path broke after a macOS update, not a permissions issue. Fix it with one command. Mon, 07 Sep 2026 00:00:00 GMT https://macfix.org/displays/external-display-not-detected-after-sleep/ https://macfix.org/displays/external-display-not-detected-after-sleep/ An external monitor that vanishes after the Mac sleeps or wakes is usually a failed display handshake, not a broken port. Confirm it, then work through the fix. Mon, 07 Sep 2026 00:00:00 GMT https://macfix.org/performance/kernel-task-high-cpu/ https://macfix.org/performance/kernel-task-high-cpu/ kernel_task pegging CPU on an Apple Silicon Mac is usually a thermal safety brake, not a bug. Confirm what's actually hot, then work through the fix in order. Mon, 07 Sep 2026 00:00:00 GMT https://macfix.org/performance/thermal-throttling/ https://macfix.org/performance/thermal-throttling/ Mac fan running loud and stuck at max speed almost always means the chip hit its thermal ceiling, not a hardware fault. Confirm it, then cut the heat. Mon, 07 Sep 2026 00:00:00 GMT https://macfix.org/permissions/app-blocked-by-gatekeeper-unidentified-developer/ https://macfix.org/permissions/app-blocked-by-gatekeeper-unidentified-developer/ macOS refusing to open an app because it can't verify the developer is Gatekeeper doing its job, not a broken download. Confirm it, then decide safely. Mon, 07 Sep 2026 00:00:00 GMT https://macfix.org/storage/disk-full-but-no-large-files-apfs-snapshots/ https://macfix.org/storage/disk-full-but-no-large-files-apfs-snapshots/ Storage reads nearly full but Finder can't find large files to explain it — local APFS snapshots are usually the hidden cause. Here's the fix. Mon, 07 Sep 2026 00:00:00 GMT https://macfix.org/updates/macos-26-what-broke/ https://macfix.org/updates/macos-26-what-broke/ A living status page for macOS 26 on M-series Macs: what's been checked on the verification fleet, what's actually broken, and what turned out to be fine. Mon, 07 Sep 2026 00:00:00 GMT