The most common errors with installing are permission errors. Here are some common solutions.
mysql-8.0.31-macos12-x86_64.pkg” cannot be opened because it is from an unidentified developer.
This error message is displayed because the macOS operating system is preventing you from opening the MySQL installation package because it was not downloaded from the App Store or an identified developer.
To fix this problem, you can do the following:
Right-click on the MySQL installation package and select "Open" from the context menu.
A dialog box will appear with the message "mysql-8.0.31-macos12-x86_64.pkg" is from an unidentified developer. Are you sure you want to open it? Click "Open" to continue.
The MySQL installation package will open and you can proceed with the installation process.
Alternatively, you can change your macOS security settings to allow installation of apps from unidentified developers:
Open the Apple menu and select "System Preferences".
Click on the "Security & Privacy" icon.
In the "General" tab, click the lock icon in the bottom left corner to unlock the settings.
Enter your administrator password when prompted.
Under the heading "Allow apps downloaded from:", select "Anywhere".
Close the "Security & Privacy" window and try opening the MySQL installation package again.
Note: Changing your security settings to allow installation of apps from unidentified developers may expose your computer to security risks. Only do this if you trust the app and the source from which you downloaded it.
mysql-8.0.31-win64 ...can not open..
There are a few possible reasons why you might not be able to open MySQL 8.0.31:
You may not have the necessary permissions to access the MySQL installation. Make sure you are logged in as an administrator on your computer.
There may be a problem with the MySQL installation itself. Try re-installing MySQL to see if that fixes the problem.
There may be a conflict with another software program that is installed on your computer. Try uninstalling any conflicting software and see if that fixes the problem.
There may be a problem with your computer's operating system. Try repairing or reinstalling the operating system to see if that fixes the problem.
If none of the above suggestions help, you may need to seek further assistance from the MySQL community or the vendor that provided the MySQL installation.