Home Macos-Big-Sur-Installation-Failed Macos-Big-Sur-Installation-Failed By Vlogg Team. Published on November 12, 2020. November 12, 2020 0 Installation failed – An error occurred while installing the selected updates. No related posts. + There are no comments Add yours Cancel replyCommentNameEmailUrl Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.