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Outlook Client not fully opening - Office 365 Mailbox

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Last Modified: 2017-11-21
Good Day,

My Outlook 2013 Client on my Windows 10 O/S is setup to connect with my Office 365 Mailbox.

Outlook won't open, when I open the Outlook Client it opens on the taskbar and puts a red cross over the Outlook Icon (screen shot attached), and from there even if I click on it it won't open Outlook and is stuck there. I have multi-factor authentication enabled but have even disabled it, and it does not make a difference. I also uninstalled and re-installed MS Office, also no difference.

The Outlook worked fine up to one day where it decided it won't open any longer.

Any advice on how to get past this one would be appreciated.

Thanks,
Reinhard
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