Outllook 365 won't add domain email account, gmail account and onmicrosoft.com email account on same profile

Question

Trying to add in Office 365 a Gmail account, 3 domain email accounts and an onmicrosoft.com email account it fails after the first synchronized account. It doesn't matter from which account you start.
Any suggestions ?

Answer 1

Hi @Stergios Kotsigiannis ,

Thanks for your reply!

How did you add your several accounts?
And do other people around you encounter the same issue?
In addition, when the issue occur, is there any error report? If so, please provide the screenshot about the error for our better research. (In order to avoid the disclosure of your privacy, please remember to hide your personal information).

For the configuration account, I have listed some factors that may affect it. Please try the following troubleshooting:

1. Firstly, please confirm if the address and password of every account are 100% correct. To verify this, it's suggested that you could log in to the web mail to check if you can log in to web mail successfully.
2. Secondly, some mail accounts may need to be given some permissions for configuring accounts. For some special email providers, such as Gmail, we need to go to the Settings page and enable the POP and IMAP access.
   
3. Please confirm that the process of adding accounts is correct. If you need, please refer to the following two articles:
   Add an email account to Outlook
   POP, IMAP, and SMTP settings
4. Considering the impact of the profile itself, it is recommended that you add each account separately in different profiles(Control Panel>Mail>Show Profiles>add) to check whether they can be successfully added.
5. Finally, Gmail announced some time ago that adding Gmail accounts to outlook clients and other mail clients may be limited. If you do encounter this problem, please try to sign in with app passwords.
   (Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)

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Answer 2

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