500 internal service error trying to update to Bug Sur
I cannot get the Mac I am using to update to Big Sur. Currently using OS X Yosemite Version 10.10.5. App store gives following error: 500 internal service error
How to upgrade to macOS Big Sur and Especially Empty Space Requirements. If upgrading from macOS Sierra or later, your Mac needs 35.5GB of available storage to upgrade. If upgrading from an earlier release, your Mac needs up to 44.5GB of available storage. To upgrade from OS X Mountain Lion, first upgrade to OS X El Capitan, then upgrade to macOS Big Sur.
To upgrade to Big Sur will require a quick, stable and reliable Internet Connection - preferred method is via Ethernet Connection. If not available and 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 Big Sur.
Tips How to Upgrade to Big Sur Worthwhile reading Before attempting the upgrade to Big Sur