office 365 exchange 2010


We are trying to migrate out of our exchange 2010 to office 365.  I have migrated all the data and webmail office 365 is working with no issues.. When I installed outlook2016 and tried to connect to the email (from any of the workstation), outlook keeps trying to connect to the on premis exchange server.  

I have stopped all the exchange services on the server but did not shut it down since it also functions as our primary domain controller.  I am sure there is probably some dns entries that i will need to delete or maybe add a conditinal forwarder for  

When I set the workstation dns to an external dns server I have no issues with outlook it connects to office 365, but I cant do that on a permanent basis since users needs to authenticate.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Vasil Michev (MVP)Commented:
That same issue has been discussed probably a hundred times on EE alone - look it up. In a nutshell - remove any internal Autodiscover endpoints, including the SCP one. Or use client-based "override" as detailed here:

All you need for O365 connectivity is the CNAME entry pointing to ExO, you can remove/block all other methods.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Todd NelsonSystems EngineerCommented:
Set the AutoDiscoverServiceInternalUri to null.

Look at this reference ...
Seth SimmonsSr. Systems AdministratorCommented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

-- Vasil Michev (MVP) (https:#a42398094)
-- Todd Nelson (https:#a42399901)

If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

Experts-Exchange Cleanup Volunteer
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Office

From novice to tech pro — start learning today.