However, there are users who reported getting errors even with more than 20 GB available storage. In this case, try to free up as much space as you can. You can use a Mac repair app to delete junk files and claim back precious storage.
Once you have enough space, try running the upgrade again. If you have attempted installing Big Sur before, make sure to delete old installation files from the Applications folder. Your Mac might be calling upon these old installation files, causing the upgrade to fail. If your system time and date are incorrect, it can get in the way of the upgrade. To do this:. Aside from new features, it also includes major changes in the UI and other aspects. But if the upgrade keeps failing, it would probably be better to wait until the latest macOS version becomes more stable before you upgrade.
Your email address will not be published. Contents hide. Before You Start. Fix 2: Reset SMC. Fix 5: Check the Date and Time. Fix 6: Do a Fresh Install. Wrapping Up. Seeing no real solutions offered here on the forums, other then seeing users getting pushed to look at the troubleshooting guide for UniBeast 8 and then coming back empty handed because they are stuck at: 8. Click to expand Open Mac App Store 2. Log in with your Apple ID 3. Last edited: Apr 4, Jamesbond Moderator. Excellent guide.
There is something I want to mention. To download, use a Mac that is compatible with the version of macOS you are downloading. Last edited: Apr 17, Jamesbond said:. Like I tried on my Mac mini Server running Mavericks. I tried repeatedly and could only get the small file and not the full installer. Genius bar? Is there a number to call? This morning I checked my applications folder and the game I downloaded was there as a very little partially downloaded file.
When I went the App Store to and hit the "check for unfinished downloads" from the menu it told me again "All files have been downloaded.
Use the Purchases page to download again". I went to the Purchases page and gave it another shot and this time I didn't even get the error. It just wouldn't do anything. It simply says "error" in read next to the "install" button as it usually does.
The file did go away after I went to the Purchases tab and tried to download it. That was the first time I had seen the file on my computer even partially. Don't know if this helps, but I figured I'd update just in case.
Sep 21, AM. It's happening the same thing with me. I've already tried to disable the anti virus but it was not enough. Oct 17, AM. I'm having the same problem.
I have no firewall in place, no virus protection software. I'm not using any 3rd party apps in my system. I'm at a loss. I've been in touch with Mac App Store Support for the past 2 weeks with still no resolution.
It seems they will refer me to Apple, and my AppleCare expired awhile ago. Hoping to discover someone else has overcome this terribly frustrating issue. Oct 23, AM. Nov 8, PM in response to scratchrobot In response to scratchrobot. Nov 8, PM. Feb 18, AM in response to slahlady02 In response to slahlady Apparently AppStore doesn't wipe some other data until you restart, so it keeps attempting to proceed with the install althout it's not possible.
Feb 18, AM. I may also add that such issue could be caused by firewall rules. In my case there was restriction to download files over 1 Gb and AppStore app was not able to upgrade Xcode to the next version it was 1. Feb 19, AM. Can you not remove the Firewall restriction I guess you'll be aware of the link below but if not, follow the instructions once firewall has been removed.
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