Install New SQL Server - password not strong enough error

When installing a New SQL Server there is a three step sequence:

Step 1 Choose a server name
Step 2 Choose a password
Step 3 SQL Version

Then we choose 'Start Install' to install the new server.
At this point two red Xs might appear in Step 2 and the installation will halt.
If we hover over the red X it will say that a stronger password is required>
Please note that the Installer requires VERY STRONG passwords, like:
'Str0ngPassw0rd@1234##'

Note: Make sure you keep a note of the password because you will need it if you later need to make any changes to the server.