Wrong Language - Flash Player 23 update - wrong file?

I've just followed the usual update process forced by an Adobe update to Flash Player.

I use English UK on a Win10 PC.

The downloaded file name is: flashplayer23au_ha_install.exe

Last week I had a problem with installing Adobe Reader - I opened the new install to find Cyrillic Ukrainian which I'm sorry to admit I didn't understand. Of course, I thought I'd made a mistake and did the whole thing again with the same result. Then I had to properly uninstall and find an English Language version. For some reason, I'd been forced / automatically download: adobe readerdc_uk_xa_install.exe which is not the correct application, at all.

So I was wary and checked the Flash Player download filename. It has 'au_ha' in the name. I'm only guessing that this is Australian (or Austrian). I started again on the Adobe website and found another version of the update file: flashplayer23_xa_install.exe (note the substitution of 'au_ha' by 'xa'.

When an update installs, the downloaded file is deleted. This keeps my PC clean but leaves no audit trail so now I make a copy before installing. It seems that I've already installed this particular update because I have this file in my download folder dated 29SEP16.

What is wrong with my PC or Adobe's update process AND what do I need to do to fix my PC?