CUMC Home | Columbia University | Jobs at CUMC | Contact CUMC | Find People
For support: call extension 5-Help (212-305-4357) or email us
  Email at CUMC

CUMC Office 365 Email Migration FAQs

In simple terms, what is the email migration?

The mail system or "back end" platform that supplies CUMC email accounts is being moved from the current system to a newer one called Office 365.

An analogy would be moving file folders in an older file cabinet to a newer cabinet. Your CUMC email account would be one file folder containing your messages, attachments, calendar entries and other data you can see when logged in to Web Outlook.
We'll be moving file folders (email accounts) in batches to the newer file cabinet. The labels (email addresses) on the folders won't change, and the files in the folders won't change, but everything will be stored in the newer file cabinet.

Read the next FAQ for information on how to make sure your email software knows to look in the newer file cabinet after your migration, and having more room in for your files.

How will this affect me?

Everyone with a CUMC email account will have 50GB of default storage space on the mail system for their messages, attachments, folders, etc., up from 1GB.

If you have already set up a computer and/or mobile device to connect to your CUMC email account, see steps to take prior to migration to make sure they continue to connect afterwards. For most this will simply be updating your "username" in the email program or app with your full CUMC email address; before to May 1st, 2017 the username format was "MC\uni".

What if I don't complete the steps prior to migration, or have problems after?

You can still update the username in any email program or app to get connected to your CUMC email account, and log in to Web Outlook (which only requires internet access and a web browser) to access and use your CUMC email as a workaround if needed. The After Migration page includes links to help with possible issues once your account is moved.

Does the migration include my archive, .pst or local folders?

Folders, messages or other data that are stored on a computer or network drive are not migrated since they are not stored on the mail system. The migration will not affect the way Outlook connects to local or network stored data, though if you need to remove and re-add your email profile you may need to "point" Outlook to the data file(s) again to get them to appear.

After migration you can take advantage of the 50GB account space to move folders/data to your mailbox if desired. Please contact your IT staff for help if needed, or check the Office 365 Migration pages for upcoming tutorials.

What if I use a shared mailbox or calendar? Or if I am a delegate or have delegated my Inbox, calendar, or other account items to someone else?

We are gathering this information while group migrations are being scheduled to make sure moves happen at the same time and can remain connected. There is now a workaround for those that have full access to a Shared Mailbox using Outlook on Windows or Macintosh. Unfortunately, there is not a workaround for those with "Send As" access or delegates to another account; accounts that are not migrated will not be able to access those that have been, and vice-versa. If there are users or shared resources that cannot be migrated at the same time, please keep in mind that we are working to get everyone moved this summer and keep delays of this nature to a minimum.

Why am I getting so many login prompts after being migrated?

If you have access to a shared mailbox or another person's account (to help manage messages or a calendar), you will be prompted to enter your login credentials for each item you connect to.
For help reducing these and to verify that another issue is not causing the repeated prompts, please see post-migration instructions for the type of email program and computer or device that is giving repeated login prompts:

Why am I seeing a Focused Inbox?

This is a feature of Office 365 accounts on some versions of Outlook and Web Outlook, see more information on Microsoft's website including how to turn it off if preferred.

What should I do if my email program is prompting for a Server name, or other settings when I try to set it up?

The only information required to set up email in a program or app is your full CUMC email address and password. Other settings should not be entered manually, or there may be issues connecting if aspects of the email system change later on. If you are being prompted for other settings:

  • Make sure you are entering your FULL CUMC email address - - in any username field, and using your CUMC email address password, which may be different than your Columbia UNI password. Log in to Web Outlook to verify it is correct.
  • Check for a Domain field in the program or app settings, and make sure it is blank.
  • If your CUMC email was set up prior to May 1st, 2017, you may need to remove it and add it again using current instructions. See the Prior to Migration section of the Office 365 migration page for full information.
  • Make sure your computer or device has a strong Internet connection. You may want to exit the email program and open a web page to verify the connection.
  • Make sure you are using a compatible email program. Others may not work with CUMC email and are not supported.
  • Check for and install any updates to the email program or app.
  • Restart the computer or mobile device, and make sure it has a strong Internet connection when it starts back up.
If none of the above work, please contact us or your Certified IT Group for further assistance.

Where can I learn more about Office 365 and CUMC email?

See the bottom of the During and After Migration page for links to information and tutorials.

| TOP |

Last updated 11/13/2017