When updating to Big Sur, I receive this message: Installation failed. An error occurred while installing the selected updates.
Big Sur update error message
Same here
Still happening to me as well, I started process earlier at notification. I got to about 3gb before the installation failed.
Even after the status page is updated, I'm getting this now when attempting and have rebooted since. "Installation failed (next line) An error occurred while installing the selected updates." (just wanted to add, I'm on a late 2014 5k imac which I checked is supported, and I've got 172 gb of free space on the Macintosh HD)
Even after the status page is updated, I'm getting this now when attempting and have rebooted since. "Installation failed (next line) An error occurred while installing the selected updates." (just wanted to add, I'm on a late 2014 5k imac which I checked is supported, and I've got 172 gb of free space on the Macintosh HD)
The same: When updating to Big Sur, I receive this message: Installation failed. An error occurred immediately after the selected updates.
For me: "The installassistant.pkg package does not meet the gatekeeper criteria", now I'm trying with Gatekeeper disabled.