Microsoft Outlook 2010 and Office 365 issue

Hi all

I just went on an network integration with Office 365 a couple of weeks ago on all PCs.

Before 365, My Microsoft Outlook was configured with 3 accounts, so 3 different Inbox accessible at the same time.

When I was opening an email from one of the inbox, when I was doing reply, it was having the inbox email address from the account of the email as the FROM sender by default.

Now that i'm on 365 with Microsoft Outlook 2010, when I open an email from one of my account inbox, the sender FROM will always be my main inbox configuration unless I change manually the FROM field to the good email address.

I would like to set it up to automatically populate the FROM field to be the email of the inbox by default.

How can I do that?

Thanks again for your help.
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Vasil Michev (MVP)Connect With a Mentor Commented:
Yes it's actually solved now. If it is still not working for your users, give it few more days for them to push the update on every server.
rawinnlnx9Connect With a Mentor Commented:
In outlook options under mail, send messages.

Make sure that *ALWAYS* use the default account when composing messages. Is not checked.
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Wilder1626Author Commented:
HI rawinnlnx9

Under Option / Mail / Send Messages, i don't have an option called or look like: "ALWAYS" use the default account when composing messages.

I will start reading the link also:
Wilder1626Author Commented:
I Have also tried  The HKCU\Software\Policies\Microsoft\Office\12.0\Outlook\Options\ForceAccountSelect, a DWORD, with value 1

But still NOT able to do what i need.
Wilder1626Author Commented:
Looks looks like it automatically connect to the default Microsoft Exchange address whenever i replay to the 3 different inbox.
Vasil Michev (MVP)Commented:
Are we talking about regular accounts, or shared mailboxes? There is a known issue with the later, and Microsoft are working on sorting it:

Also, does this happen when replying only, or when composing new mail as well?
Wilder1626Author Commented:
Hi  vasilcho

yes, when reply or creating a new email, it always take the default email address by default.

I will read the link you provided me.
Wilder1626Author Commented:
Hi all

Just to give you an update.

Based on this link:

It says that they are working on it. But since this week, it is working great on my end where when i reply, it keeps my inbox email address from the account of the email as the FROM sender, just like before.  We add a ticket open with Microsoft about this so they must of found a fix for it.

I will try to get more information and let you know.
Wilder1626Author Commented:
Thanks again for all your help. I will validate with all users for sure.
HI I am looking for solution under article

This page does dont exists anymore.

"Under Option / Mail / Send Messages, i don't have an option called or look like: "ALWAYS" use the default account when composing messages." IS UNCHECKED

I am using Outlook 2013 and Exchange 2010 On_Premise.

Any suggestions?
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