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Cannot Download MacOs Monterey

Why is MacOs Monterey keep quitting at or close to the end of the download? I am trying to download it on my MacBook Air Big Sur and it will NOT download. of the

MacBook Air 13″, macOS 11.6

Posted on Jan 3, 2022 1:02 PM

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2 replies

Jan 3, 2022 2:16 PM in response to theconstantgardener

If you have sufficient space on your MBA's drive read the following:


I've had better luck from the Safe Mode because I evidently have some 3rd party software that interferes with the installation so try the following:
#1 - boot into Safe Mode according to Start up your Mac in safe mode - Apple Support.

NOTE: Safe Mode boot can take up to 3-5 minutes as it's doing the following; 
• Verifies your startup disk and attempts to repair directory issues, if needed
• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)
• Prevents Startup Items and Login Items from opening automatically
• Disables user-installed fonts 
• Deletes font caches, kernel cache, and other system cache files

#2 - go to the System/Software Update preference pane and begin the download.

#3 - run the installer from the Safe Mode.


Jan 3, 2022 2:13 PM in response to theconstantgardener

Is the user profile true and accurate " MacBook Air 13″, macOS 11.6 "


if so - suggest updating Big Sur to the current version 11.6.2 released Dec 13, 2021


There are other person attempting to upGrade to Monterey with out dated versions of Big Sur and experience similar issue are you.


If Above does not apply and Bug Sur is running 11.6.2 >>


January 3  2022 Version # 3


The below points should be consider before attempting the upgrade.


Point # 1 - Does the >>  Computer Qualify for the Monterey upgrade 




Point # 1A - There are reports appearing on the ASC Forums regarding failed installation of Monterey on older Qualifying Apple Computers. In most cases this is related to having a NON Apple Original internal drive ?  


The EFI Boot ROM included in Monterey is verifying for Original Apple Drive and if not found , may Balk or fail to upgrade to Monterey. 


Reports indicate the EFI BOOT ROM is Required to Flash the Computer and is a  requirement for a Successful Monterey Installation.


Point # 2- >> How to upgrade to macOS Monterey


Point # 3 - Empty Space Requirements  >> If upgrading from macOS Sierra or later, your Mac needs 26GB of available storage to upgrade. If upgrading from an earlier release, your Mac needs up to 44GB of available storage. 


Point # 4 - Empty Space afterwards - it is suggested to keep at least 15% of the Drive Total Capacity as Empty Space for good operations of the computer and for additional updates to Monterey to download, expand and install.


Point # 5 - The upgrade will require a quick, stable and reliable Internet Connection - preferred method is via Ethernet Connection. 


Point # 6 - If using Wifi - move computer as close to the Access Point / Router and disconnect all other devices connected to Wifi. Want the maximum bandwidth for the computer being upgraded to Monterey


Point # 7 - Commercial VPNs should only be used if Mandated by Corporate Head Office for working remotely. Otherwise - ones Privacy and Security touted by the VPN is suspect. 


Point # 8 - If downloading Monterey from behind a VPN it may increase Packet Looses and an incomplete or corrupted Installer.


Point # 9 - AntiVirus Software should be removed as per Developers Instructions. They are unneeded, cause havoc and interfere with the normal operation of the OS including the download and installation of Monterey


The Built in Security  is all that is required. 


There are no known Windows-like Viruses in the wild that self replicate and affect macOS because of the underling UNIX  Foundation and Permission Limitation. 


Point # 10 - Disk Cleaners, Optimizers and UnInstaller are not needed. They will often times attempt to Modify, Alter, Remove or Delete elements of the Operating System requiring a Re-Installation.


Point # 11 - Do you have a Rescue Plan In-Place. This comprises having 3 Backups using 2 methods and 1 Off Site incase of Theft, Loss or Natural Disasters. A Time Machine Backup  is very useful and can be used to Revert to Previous Working macOS


Point # 12 - For addition purposes - two Tested Bootable Clones each to separate external drives. This is insurance incase the upgrades goes sideways. At least one Tested Clone and / or Time Machine Backup should be Off - Site


Point # 13 - Are the installed Applications / Extensions compatible with Monterey. Check with the Developer for compatible Apps / extensions. Do they offer updates or upgrades. Same goes for Third Party Drivers for Printer, Scanners etc.


Point # 14 - If upgrading from Mojave and earlier versions of macOS - Remember that Monterey does not support anything 32 bit. These include Applications, Extensions and Drivers for any devices. There is no workaround.


Point # 15 - To check for 32 bit Applications - a good application to use is Go64 - safe to use.

Cannot Download MacOs Monterey

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