Big Sur 11.2.3 fails to install on my iMac. It downloads then says it's preparing and after 10 minutes I get a message that it failed to download although it obviously did download. Anyone else experiencing this problem and how did you resolve it?

Hi dwamback,

Let's try the update in Safe Mode (Intel): How to use safe mode on your Mac - Apple Support.

Cheers,

Jack

Big Sur 11.2.3 update installed sucessfully in 'Safe Mode'.

Before this the message was 'Download Failed'.

Tried all sorts before, but no success.

Is this a bug in the update?

Thankyou Jack.

2020 Apple MacBook Air 13.3" Retina Display, M1 Processor, 8GB RAM, 256GB SSD, Silver

Yes. It's best to turn off your any anti-virus you may have and then do a "Safe Mode" start up. My update (Big Sur 11.2.3) installed perfectly after starting in "Safe Mode".

Same question... no anti-virus, all known updates are up to date, followed all posted suggestions on the Apple and MS forums. Seems to download fine for 4 min, then during 15 min of prepare, at about 10 min, bombs out with error message.

Same question. Big Sur 11.2.3 Fails to install on my iMac.