
From there you can remove the newly created admin account. Sign out from there and log in to your old account. As per his tip, the installation will successfully complete and you will be able to login to your newly created admin account.

Now from there, try running the installer. After that, Sign out from the existing account and Log in to the newly created admin account. Firstly, you need to create another user account by providing the admin privilege. #3:- Install By creating new Admin AccountĪ couple of users mentioned that this method worked for them. At that time, the system didn’t show ” An Error Occurred Validating the installer data” error and he successfully finished the installation. One user mentioned that, he turns off his WiFi and connects with a 4G USB dongle. Some users found changing your existing WiFi connection will fix this issue. This may fix all errors during Mojave update and help you to migrate from Sierra. This was one of the tips most users found working. #1:- Run the Installer after restarting Mac

So, if the above fix (which worked for me) didn’t fix yours, please try the following tips. Unfortunately, none of them worked for me but for others, it was the right solution. What Other Forum users telling about “Redownload the installer and try again” error message?Īs I told above, I read many forum posts about this issue and there were many recommendations. I waited nearly 30 minutes to finish the installation.

In my case, I left the home during the downloading and when I return, Mac was running the installation automatically.
