Will Autodiscover reconfigure an existing Outlook profile in a cutover migration?

Posted on 2015-02-06
Medium Priority
Last Modified: 2015-02-11
We are performing a cutover migration from Exchange 2007 to Office 365.
Currently, there is no autodiscover DNS record configured.

If we setup the standard CNAME record...


...will the user's Outlook profiles reconfigure themselves or will it be necessary to setup a new profile for each user?

Thank you for your time in advance.

Question by:K B
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
LVL 17

Expert Comment

ID: 40593576

i'm not shure about this one, but I know that when you are doing cross forest migration, with autodiscover configured, after mailbox is moved to new exchange outlook will detect it, and reconfigure automatically.

Guess this will be the same, but not shure.

Author Comment

by:K B
ID: 40594247
So I can simulate this with a HOSTS file entry but AutoConfiguration only seems to occur if I modify Logon Network Security under the Security Tab to Anonymous.

Will this occur when we make the production cutover with the proper CNAME record?

I am fooling Outlook to use autodiscover.MyDomain.com by pointing it to the IP for autodiscover.outlook.com (with a HOSTS file entry) so I am hoping this is why I have to change Logon Network Security to Anonymous but I need to be completely sure.

Expert Comment

ID: 40594354
Hi KB,

You will need to configure outlook profile separately. Outlook does not know the change so you need to install Office 365 autodiscover in your client machines.  It will prompt to enter the details when reconfiguration happen.

P. Praveen Raj
NFR key for Veeam Agent for Linux

Veeam is happy to provide a free NFR license for one year.  It allows for the non‑production use and valid for five workstations and two servers. Veeam Agent for Linux is a simple backup tool for your Linux installations, both on‑premises and in the public cloud.


Author Comment

by:K B
ID: 40594374
Thank you .... I am not following your reply.
you need to install Office 365 autodiscover in your client machines

Accepted Solution

K B earned 0 total points
ID: 40594839
This just won't work...

Only in a Hybrid migration does the existing profile work - but still ActiveSync users must create a new profile.

Author Closing Comment

by:K B
ID: 40602758
Not possible in this case.

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you troubleshoot Outlook for clients, you may want to know a bit more about the OST file before doing your next job. IMAP can cause a lot of drama if removed in the accounts without backing up.
The core idea of this article is to make you acquainted with the best way in which you can export Exchange mailbox to PST format.
A company’s greatest vulnerability is their email. CEO fraud, ransomware and spear phishing attacks are the no1 threat to a company’s security. Cybercrime is responsible for the largest loss of money to companies today with losses projected to r…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…

718 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question