I did this, somewhere... When the 3CX (app or browser) gets an incoming call on my computer, a browser page opens up trying to log into Office 365. Even after I log in, new tabs come up for new inbound calls. I changed something, somewhere, but I can't figure out what or where that is. It only happens on my computer, so far. I know that if I can do this, someone else will. I need to figure out what I changed and change it back! I thought I'd post this. Not only should that cause me to find what I did, but some of you might get a chuckle at this issue.