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In Microsoft Outlook 2010, Outlook 2013, Outlook 2016, Outlook 2019 and Outlook for Microsoft 365, you can add multiple Microsoft Exchange accounts to the same profile if one of the following conditions is true: As it is now, Outlook appears to be "bingo" to use. Really appreciate if anyone has an explanation for this or tips on what can be done to make this work. Removed Offline address book and regenerated it.Turn off mail tips, turn off cached mode, start outlook a few times, turn on mail tips and cached mode again.(We uses Microsoft® Outlook® for Microsoft 365 MSO (6.20706) 64-biters with Office 365 Exchange) Deleted Outlook cache files locally on the profile.Deleted the list for auto complete (locally in Outlook).Remove all of the accounts and logins on the PC for account no.Google to find a solution but can not see the pattern or what the problem really is other than that it has something to do with when one account will/tries to access/use the other account "contacts". I suspect that all of these things have a connection and have spent several hours with Dr.
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We get error messages when we send out emails with the feedback of type: "The e-mail program uses outdated address information for IMCEAEX-_o=ExchangeLabs_ou=Exchange+20Administrative+20Group+20+2xxxxxxxxxxxx+29_cn=Recipients_cn=19xxxxxxxxxxxxxxxxxxxxXXxxXXxxX.Then the message comes that "We will not be able to deliver this message to xxx xxx because the email address is no longer valid." You often look at calendars for colleagues if they are available and choose "new meeting with everyone" in Outlook.A restart of Outlook can (or not) fix it. Sometimes we cant mark a colleague's calendar in the list and display it in Outlook.They never appear in the list after pressing the OK button to add new contacts in calendar list/view. Sometimes we do not get new calendars added from the global adress list.These two accounts are located on separate tenants and each belong to separate "company". Hi, we need to have two email accounts set up in our Outlook (our own personal accounts).
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