If you cannot install macOS 10.13 in Safe Mode, try a clean installation of the new update.
Install macOS update in Safe Mode to fix the macOS High Sierra 10.13 update stuck error You can go with two troubleshooting methods to fix the macOS 10.13 installation failure error: MacOS 10.13 High Sierra fails to install/gets stuck or freezes while installing! Click Apple Menu> Select App Store > Click Update next to macOS Sierra in the Update section.Reboot Mac and retry downloading a new macOS Sierra update 10.13.Open Launchpad > Delete ' Install macOS Sierra' file with a question mark on it.If you get stuck or fail to install the downloaded macOS 10.13, follow any one of the below tips to fix the issue:
MacOS High Sierra 10.13 downloaded but won’t install! If you cannot download or install macOS 10.13 update on your Mac, or macOS 10.13 gets stuck, freezes or fails to install, don’t panic and just simply follow these instructions. If you are trying to find effective solutions to fix macOS High Sierra update stuck or failure error, you are at the right place.
