(1) First move all BTC coins off of your Armory wallets and Bitcoin Core wallet to a safe place. I'm using a hardware wallet that will hold both BTC, BCH and other altcoins.

(2) Uninstall  Bitcoin Core.

(3) Configure your computer to show hidden files (google methods for your particular computer). Delete all hidden Bitcoin Core hidden files and blockchain. Google or use youtube to find files if you don't know. Your looking for a folder labeled Bitcoin. Delete it.

(4) Install bitcoin-abc-0.16.1 (Bitcoin-qt) for windows https://download.bitcoinabc.org/0.16.1/win/

(5) Install and synchronize new ABC (bitcoin-qt). Could take several days. Not easy to find the wallet in the downloaded folders. If you use a zip file you will have to extract the files. "Hint" Open the files with the most data in them.

(6) Open Armory and in "User" tab and set to "expert" in both online and offline wallets.

(7)  Also in Armory go to File/Settings and uncheck the box at the top of the page that says. "Let Armory run Bitcoin Core/bitcoind in the background".

( Shut down Armory and Bitcoin core. Restart computer for the hell of it.  Should Shut down bitcoin-abc？

(9) Open up the new ABC wallet you previously synchronized. Wait until it is synchronized. Leave it on.

(10) Then open up Armory and let it synchronize.

(11)  Go to Help tab in Armory and select "Rebuild and Rescan Data Bases"

(12) You should be able to see the BCH balance in a few hours. To move the BCH you just follow the directions at   "the first post of this thread".