My co-worker and I encountered the same thing on our 2018 MacBook Pro (13-inch, Four Thunderbolt 3 Ports) computers. I found that I needed to restart my computer in Safe Mode (hold Shift key during restart) and then I was able to complete the download and install of Catalina. The usual cause is a simple one; your Mac isn’t connected to your local network and the Recovery process is trying to access Apple’s servers to download the software needed for installation. Instead of telling you your Wi-Fi or Ethernet network isn’t working, the installer displays the above message.

Your Mac provides several tools to help you identify it. The simplest is About This Mac, available by choosing About This Mac from the Apple  menu in the upper-left corner of your screen. The other is the System Information app. Learn how to use these tools to identify your Mac.

If you don’t have your Mac or it doesn’t start up, use one of these solutions instead:

Why Macbook Air For College

• Find the serial number printed on the underside of your Mac, near the regulatory markings. It’s also on the original packaging, next to a barcode label. You can then enter that serial number on the Check Coverage page to find your model.
• The original packaging might also show an Apple part number, such as MQD32xx/A (“xx” is a variable that differs by country or region). You can match the Apple part number to one in the list below to find your model.

List of MacBook Air models

MacBook Air models are organized by the year they were introduced, starting with the most recent. Click the model name for detailed technical specifications.

MacBook Air models from 2013 and newer can run the latest version of macOS. For older models, the latest compatible operating system is noted.

2020

MacBook Air (M1, 2020)
Colors: Space gray, gold, silver
Model Identifier: MacBookAir10,1
Part Numbers: MGN63xx/A, MGN93xx/A, MGND3xx/A, MGN73xx/A, MGNA3xx/A, MGNE3xx/A
Tech Specs: MacBook Air (M1, 2020)
User Guide: MacBook Air (M1, 2020)

MacBook Air (Retina, 13-inch, 2020)
Colors: Space gray, gold, silver
Model Identifier: MacBookAir9,1
Part Numbers: MVH22xx/A, MVH42xx/A, MVH52xx/A, MWTJ2xx/A, MWTK2xx/A, MWTL2xx/A
Tech Specs: MacBook Air (Retina, 13-inch, 2020)
User Guide: MacBook Air (Retina, 13-inch, 2020)

2019

MacBook Air (Retina, 13-inch, 2019)
Colors: Space gray, gold, silver
Model Identifier: MacBookAir8,2
Part Numbers: MVFH2xx/A, MVFJ2xx/A, MVFK2xx/A, MVFL2xx/A, MVFM2xx/A, MVFN2xx/A, MVH62xx/A, MVH82xx/A
Tech Specs: MacBook Air (Retina, 13-inch, 2019)
User Guide: MacBook Air (Retina, 13-inch, 2019)

2018

MacBook Air (Retina, 13-inch, 2018)
Colors: Space gray, gold, silver
Model Identifier: MacBookAir8,1
Part Numbers: MRE82xx/A, MREA2xx/A, MREE2xx/A, MRE92xx/A, MREC2xx/A, MREF2xx/A, MUQT2xx/A, MUQU2xx/A, MUQV2xx/A
Tech Specs: MacBook Air (Retina, 13-inch, 2018)
User Guide: MacBook Air (Retina, 13-inch, 2018)

2017

Download word 2016 for mac. MacBook Air (13-inch, 2017)
Model Identifier: MacBookAir7,2
Part Numbers: MQD32xx/A, MQD42xx/A, MQD52xx/A
Tech Specs: MacBook Air (13-inch, 2017)
User Guide: MacBook Air (13-inch, 2017)

2015

MacBook Air (13-inch, Early 2015)
Model Identifier: MacBookAir7,2
Part Numbers: MJVE2xx/A, MJVG2xx/A, MMGF2xx/A, MMGG2xx/A
Tech Specs: MacBook Air (13-inch, Early 2015)
User Guide: MacBook Air (13-inch, Early 2015)

Why Buy A Macbook Air

MacBook Air (11-inch, Early 2015)
Model Identifier: MacBookAir7,1
Part Numbers: MJVM2xx/A, MJVP2xx/A
Tech Specs: MacBook Air (11-inch, Early 2015)
User Guide: MacBook Air (11-inch, Early 2015)

2014

MacBook Air (13-inch, Early 2014)
Model Identifier: MacBookAir6,2
Part Numbers: MD760xx/B, MD761xx/B
Tech Specs: MacBook Air (13-inch, Early 2014)
User Guide: MacBook Air (13-inch, Early 2014)

MacBook Air (11-inch, Early 2014)
Model Identifier: MacBookAir6,1
Part Numbers: MD711xx/B, MD712xx/B
Tech Specs: MacBook Air (11-inch, Early 2014)
User Guide: MacBook Air (11-inch, Early 2014)

2013

MacBook Air (13-inch, Mid 2013)
Model Identifier: MacBookAir6,2
Part Numbers: MD760xx/A, MD761xx/A
Tech Specs: MacBook Air (13-inch, Mid 2013)
User Guide: MacBook Air (13-inch, Mid 2013)

MacBook Air (11-inch, Mid 2013)
Model Identifier: MacBookAir6,1
Part Numbers: MD711xx/A, MD712xx/A
Tech Specs: MacBook Air (11-inch, Mid 2013)
User Guide: MacBook Air (11-inch, Mid 2013)

2012

Why Get A Macbook

MacBook Air (13-inch, Mid 2012)
Model Identifier: MacBookAir5,2
Part Numbers: MD231xx/A, MD232xx/A
Newest compatible operating system: macOS Catalina 10.15.7
Tech Specs: MacBook Air (13-inch, Mid 2012)
User Guide: MacBook Air (13-inch, Mid 2012) Winzip free download for mac os x.

MacBook Air (11-inch, Mid 2012)
Model Identifier: MacBookAir5,1
Part Numbers: MD223xx/A, MD224xx/A
Newest compatible operating system: macOS Catalina 10.15.7
Tech Specs: MacBook Air (11-inch, Mid 2012)
User Guide: MacBook Air (11-inch, Mid 2012)

2011

MacBook Air (13-inch, Mid 2011)
Model Identifier: MacBookAir4,2
Part Numbers: MC965xx/A, MC966xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: MacBook Air (13-inch, Mid 2011)
User Guide: MacBook Air (13-inch, Mid 2011)

MacBook Air (11-inch, Mid 2011)
Model Identifier: MacBookAir4,1
Part Numbers: MC968xx/A, MC969xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: MacBook Air (11-inch, Mid 2011)
User Guide: MacBook Air (11-inch, Mid 2011)

2010

MacBook Air (13-inch, Late 2010)
Model Identifier: MacBookAir3,2
Part Numbers: MC503xx/A, MC504xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: MacBook Air (13-inch, Late 2010)

MacBook Air (11-inch, Late 2010)
Model Identifier: MacBookAir3,1
Part Numbers: MC505xx/A, MC506xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: MacBook Air (11-inch, Late 2010)

2009

Macbook Air Why Did My Download Failing

MacBook Air (Mid 2009)
Model Identifier: MacBookAir2,1
Part Numbers: MC505xx/A, MC233xx/A, MC234xx/A
Newest compatible operating system: OS X El Capitan 10.11.6
Tech Specs: MacBook Air (Mid 2009)