IMAP error message

IMAP error message

As of a few hours ago, my Outlook IMAP account is not able to connect.  I get an error message about Invalid credentials.  
I did not make any changes leading up to this, so I'm not sure why it suddenly isn't working.  Note: webmail is working.

If this is on Zoho's end, can you please fix as soon as possible?

Anyone else having similar issue?

Thanks.