11.5 Update fails to download

[AMTYVLE]

Hello - I've been trying to update my MBP to Big Sur 11.5 and each time it states the download failed. I've been trying for the past 2 days and each time I get the below error. I'm currently on Big Sur 11.4 and this is the first time ever I've had this issue with updating...

Any suggestions?

 

[piattj]

Happened once for me. Immediate retry was successful

 

[iAssimilated]

I've been having this issue a lot with Big Sur. Most of the time I have to run the following command to install the update:

softwareupdate -i -a

With the 11.5 update I actually had to run that command and then go back to System Preferences -> Software Update and the option changed from "Update Now" to "Restart". Upon restarting the update installed. I only mention this because with past updates running the above command was enough to tell macOS to start the update on reboot.

 

[AMTYVLE]

I've been having this issue a lot with Big Sur. Most of the time I have to run the following command to install the update:

softwareupdate -i -a

With the 11.5 update I actually had to run that command and then go back to System Preferences -> Software Update and the option changed from "Update Now" to "Restart". Upon restarting the update installed. I only mention this because with past updates running the above command was enough to tell macOS to start the update on reboot.

That worked perfectly! Thank you so much.

 

[robinp]

The problem for me was a lack of space. Had exactly the same “check your connection” BS error. Wasted ages before finding out that I unexpectedly only had about 10GB free.