This just started happening, granted I recently updated my laptop, network, office password. I am continually prompted for user name and password by Outlook but not on launch... it happens several minutes after launch and never remembers or retains my username and password and continually pops up. I have tried repeatedly to delete office credentials from credentials manager - no luck.
Message is a Windows Security box, triggered by outlook, says signin, then says:
Enter your user name and password to download: https://success.salesforce.com/services/apexrest/calendar/ical/UC-95c31b0f4a03447ba277612c231c0954/myenrolled.ics.
then asks for UN and PW. Image attached. Please help.
(PS salesforce support could not help because it is being generated on the client)