Unfortunately, I had already tried that. (uninstall, ... re-install)
Each time i went to use WORD or EXCEL, it required me to sign in,
each time , it said i had the wrong password (false).
Each time i tried to clear the "cache" it did not work.
(In fact, this laptop was wiped clean recently and had new OS installed, so it should have no cache);
However --- I found a solution.
I simply changed my password on my email account.
The next time i went to use Word, (which requires a log in),
the NEW password was now recognized. ... It is the first time i was able to get into the program.