Outlook 2013 error 0x8004210E

I have a new Windows 10 computer with Office 2013 on it and Outlook is now giving me this error message every time I try to Send and Receive.

Task '*** Email address is removed for privacy *** - Receiving' reported error (0x8004210E) : 'Your mailbox is temporarily unavailable because another e-mail message is being delivered to it or another mail application is accessing it.  The server responded: -ERR [IN-USE] account is locked by another session or for maintenance, try again.'

I also use this email on my iPhone.  Even if i turn off my iPhone i get the same error on my PC.  Also Spectrum says it is not a problem on their end. 

 

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Last updated September 30, 2021 Views 26 Applies to: