Cant install Flash The screen advises will happen shortly please wait

Windows 10 trying to install latest Flash 31 xa

What is the complete file name of the installer file you are using?  We have many, many files, and providing the exact file name allows us to use that file to attempt to reproduce the issue.

Just runs into the screen that will happen shortly

What screen are you referring to?  Please post a screenshot

If you are able to successfully install Flash Player (no error during installation), but Flash content is not displaying, see Why do I have to click to activate plugins? | Firefox Help for assistance.

Have similar issues with flash in chrome even though chrome is supposed to have it already installed.

While Google embeds Flash in Chrome, it's disabled/blocked by default.  See Use or fix Flash audio & video - Computer - Google Chrome Help for assistance.  Note that as of Chrome 69, Chrome deletes the 'allow' Flash entries (in chrome://settings/content/flash) when the browser is closed, resulting in users having to 'allow' Flash again on a site they had previously 'allowed' Flash on.  This is a Chrome implementation and Adobe has nothing to do with this Chrome browser behaviour.