I have been working on this all morning. I have Outlook 2016. Unable to have Outlook accept my password, I changed the password on my gmail account, logged off, and logged back in with the new password, which verified it is correct. When I open Outlook, I see emails dating back to July of 2017, but no later. Every time I try entering my new password, verified as valid, it comes back every few seconds, asking me to re-enter it. I have re-entered and re-entered, to no avail.
I used the virtual agent, and it directed me to the Outlook web site, which duplicates the look and feel of the Outlook application, and the web site correctly identifies my name as Peter. However, there are zero emails and zero contacts on the site.
Here's the error message: Sending reported error (0x800CCC92): "Your email server rejected your login. Verify your user name and password for this account in Account Settings." I have become frustrated at being thwarted at every turn on this. If someone has some advice, I would be pleased to hear it. Thank you, ~ Peter Ferber