MacOS 10.15.3 Update Can't Be Installed

Question

I tried to install the last update of macOS but it gives me this error, Can anyone help me with that? Note: I have a MacBook Pro Mid 2014

Answer 1

You can't update an alpha or beta macOS with a final updater!

Simply visit the App Store and download the latest macOS installer and install it.

You might have to unenroll from the Beta Program or remove a configuration profile in macOS before you can install the current 10.15.3 (Catalina) successfully.

Answer 2

I had same issue and figured out using following steps:

1. Make sure you have more than 10GB space (8.16GB update size)
2. Go to App Store and Search for "masOS Catalina"
3. Click Get, and it will open up the "Software Update" window then click Update Now