Catalina OS not downloading and installing

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Catalina OS not downloading and installing

Hi there,

Trying to update my work Mac from High Sierra 10.13.6 to Catalina 10.15 (after COVID lockdown) via the App Store, and it seems to start to download but after a few minutes it stops and doesn't progress any further.

My network connection is through ethernet and not WiFi so connection wise it is fine.

The installer file doesn't even start or carry on what it usually does.

Mac model: iMac (Retina 5K, 27-inch, 2017)

Any ideas?

iMac Line (2012 and Later)

Posted on Jun 23, 2020 3:31 PM

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Answer 1

Best reply

Old Toad

Level 10

208,487 points

Jun 23, 2020 4:33 PM in response to GeckoWebDesign

How much free space do you have on your boot drive. Have you run any "cleaning", "optimizing", "speed-up" or anti-virus apps on your Mac?

Boot into Safe Mode (How to use safe mode on your Mac - Apple Support) by booting with the Shift key held down and try installing from there.

NOTE: Safe Mode boot can take up to 10 minutes as it's doing some system cache cleaning, volume verifying and directory repairing.

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Answer 2

Jun 23, 2020 7:11 PM in response to Old Toad

Thanks for the reply but tried this and still had the same issue in Safe Mode.

Its a reasonably new machine and has plenty of storage, I'm thinking its more of a network issue here or something with the work Macs connected to the network. My personal MacBook Pro has no problem downloading the update on the same WiFi network.

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Catalina OS not downloading and installing

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