This morning, I logged into my Barclays on line account. As I did this, I was informed by Kaspersky, that they has added an extension to my MS Edge Browser and, invited to accept and enable, which I did. Continuing on into the log on to my Banking account, I found that all transactions, now, work perfectly, on this PC. Hopefully, everyone else, who had this problem, is now OK. Thank you to everyone who responded to my request for help.