I have Outlook 2016 and I'm trying to pickup my gmail using IMAP. I can receive emails, but it does not send when doing a test send on setting up the email. Error code: 0x800cce05

SMTP Server: smtp.gmail.com My outgoing server requires authentication (ticked) Port: 465 (SSL). Also tried 587, SSL, TLS

It works fine on my mobile, works fine with Office 2010. Works fine with Windows 10 mail. But not with Office Outlook 2016.

  • I have the same problem, was on a long online help chat with Microsoft today, I let them to control my computer online, they tried everything, after two hours he gave up. They will get back to me tomorrow with some level 2 highly trained manager.. lol. Will see..
    – user163353
    Dec 28, 2015 at 22:18

1 Answer 1


it might be that you have to allow less secure apps to connect to your gmail account: https://www.google.com/settings/security/lesssecureapps

more details:https://productforums.google.com/forum/#!msg/gmail/LhWVrYZc_Eo/5EMpldFUC3wJ

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