Thank you Imran for your suggestion.
I removed the only remaining credential associated with my email account/name in Credential Manager. (As mentioned in a previous post I had previously removed the 3 other ones that had appeared there, based on a suggested solution found elsewhere in this forum.)
After removing the credential as you suggested I tried again to launch Outlook 2010, first with the newest Outlook Connector Profile (the one mentioned/documented in my previous post that was succesful at connecting in the profile setup wizard, but would not connect when I launched Outlook.) but again was prompted again and again for my password as described before (see below), and after a dozen failed tries after entering my info, when I canceled Outlook gave me the notice below the pw prompt.
I then tried to open Outlook with my saved original Outlook Connector Profile, which opened, showing my old emails, etc. but still would not connect with the Office 365 Exchange Server despite entering my credentials and checking to remember repeatedly for 10 or 12 tries... So no luck with that so far.
Do you have further suggestions for actions following my deleting the password credentials in Credential Manager as you suggested?
As requested in my latest post before this one - Should I attempt to resolve my problem by resetting my password - again - using
the procedure described at the Office365help page Reset your administrator password...? (See my post above for more explanation.)
Is there any liklihood of resolving it that way or similar approach, or more likely for complications?
Looking forward to reply.
Thanks,
Ken