401 Error during sign in.

When signing in you may receive the following error:
"Timed Out: Please Log On Again (401)"

Try this: Go to https://www.familysearch.org with your browser, re-enter the same Sign-in name and Password explicitly (do not rely on the browser to supply the defaults), and confirm that you are able to log on.

Re-enter the same Sign-in name and Password in Charting Companion.