Browser is cleared. Can log in from work computers (not IE 10) and from Firefox. I never change anything (except to install recommended updates). Really getting frustrated with not being able to log in at home on laptop for almost a week now. I've spent quite bit of time in the forums searching. I've followed links for optimizing browser (tried some MS FixIt app, which CRASHED). This happens periodically. Usually if I come back in a bit, I can sign in but not this time.

What does this mean:

X-OWA-Error: ClientError;exMsg=Expected identifier;file=https://pod51034.outlook.com/owa/:1
X-OWA-Version: 15.0.785.21
X-FEServer: BLUPR01CA012
X-BEServer: null
Date: 1/2/1601 2:21:09 PM