How to Manually Configure Outlook (Office 365)

After several attempts of trying to configure Outlook using the wizard - I decided to configure Outlook manually. I ran into a few speed bumps as the configuration for Office 365 is slightly different than an On-premise configuration:

Manually configure Outlook

To manually configure Outlook to connect to Exchange Online, follow these steps:

1. Determine the mailbox server name and the proxy server URL. To do this, follow these steps:

a. Sign in to the Office 365 portal.

b. Click Outlook to open Microsoft Outlook Web App.

c. In the upper-right corner of the page, click the Help icon (the question mark), and then click About.

d. On the About page, locate and then note the following items:

§ Mailbox server name: Example: TO get the server name you would need to go to OWA click on about copy the Exchange Client Access server name for example you would need to only keep the CH1PRD0602 and you would put as the server name.

§ Host name: This is the proxy server URL. Example

2. Manually configure Outlook to connect to Exchange Online. To do this, follow these steps:

a. Click Start, click Control Panel, and then click Mail.

b. Click Show Profiles and then click Add.

c. Type a name for the profile, and then click OK.

d. Click to select the Manually configure server settings or additional server types check box, and then clickNext.

e. Select Microsoft Exchange, and then click Next.

f. In the Server box, type the mailbox server name that you noted in step 1d.

g. Make sure that the Use Cached Exchange Mode option is selected.

h. In the User Name box, type your user name (for example,, and then click More Settings.

i. Click the Connection tab.

j. Make sure that the Connect to Microsoft Exchange using HTTP check box is selected, and then clickExchange Proxy Settings.

k. In the Use this URL to connect to my proxy server for Exchange box, type the proxy server URL that you noted in step 1d.

l. Make sure that the Only connect to proxy servers that have this principal name in their certificate check box is selected, and then type

m. Click to select the On fast networks, connect using HTTP first, then connect using TCP/IP check box, and then click to select the On slow networks, connect using HTTP first, then connect using TCP/IP check box.

n. Under Proxy authentication settings, select Basic Authentication.

Note Users can also select Negotiation Authentication if the administrator enabled this option in the Office 365 portal.

o. Click OK two times.

p. Click Check Names. When the server name and the user name are displayed with an underline, clickNext.

q. Click Finish


  • Microsoft Office 365 for enterprises
  • Microsoft Office 365 for small businesses
Comments (32)

  1. Jyothsna says:

    why is this process?as in office 365 in site users will have outlook and it directly opens the mail box right?

    Please tel me y hw is this diff from that?

  2. KB author says:

    Hi Jyothsna

    Thanks for your comment!

    the method you provide is the common way of office 365 configuration in condition of that autodiscover is working  properly.

    You can try the steps in this article  in case autodiscover did not work.

  3. Shahid sayyed says:

    May i know what is this 365 office?

  4. Shahid sayyed says:

    I need to configure with IMAP for user.also want to take a back up of Pst.but not in a any drives,or dvd and know how we are configring the outllok need back up option.

  5. A Long Term Adherent ... says:

    What the #$%#$%$ is Office 365? Please post details on what it is, what it provides, what it costs, and which OSs it's compatible with. Thank you.

  6. LesterW says:

    This process doesn't seem to work. The mailbox server name formats have changed for one. In the About information, there is the OWA server (something like and then there is the IMAPS/POP3 server (sommething like prod51043,

    I tried both servers and all that happens is that I keep getting prompted for the username and password over and over. . I presume that the username should be, correct?

  7. alex says:

    Did somebody find a solution? I can't find the server name any more. Mailbox server name: – doesn't exists and host address doesn't work.

  8. Head In the Cloud says:

    Warning. This may not apply to Office 365 accounts that are on Exchange 2013. See…/388420.aspx response by Benoit_HAMET.

    "… Outlook clients no longer connect to a server FQDN as they have done in all previous versions of Exchange. Outlook uses Autodiscover to create a new connection point comprised of mailbox GUID, @ symbol, and the domain portion of the user’s primary SMTP address. This simple change results in a near elimination of the unwelcome message of “Your administrator has made a change to your mailbox. Please restart.” Only Outlook 2007 and higher versions are supported with Exchange 2013."

    Automatic configuration works for me, but manual configuration is failing due to infinitely repeated prompting for credentials.

  9. cmc says:

    please update for hosted exchange 2013.  help->about fail

  10. Mobilemeneer says:

    This is a very effective way of configuring Outlook with a static office 365 mailbox server. The problem with this scenario is that Microsoft changes mailboxes from servers.

    So the user will end up with no connection to his mailbox at some time.

    Have you thought about it? and what is your solution for it?

  11. Jim-N-Weatherford says:

    Do they update ANY of this documentation?

    Help > About   – FAIL! indeed.

  12. TimH says:

    The new 2013 version of OWA no longer includes server information for the user. You need to obtain this through a powershell command.

    see here:…/141805.aspx

  13. Eric says:

    Fails at 1.c — no such option exists.

  14. Anonymous says:

    why is this mandatory?
    Make sure that the Only connect to proxy servers that have this principal name in their certificate check box is selected, and then type

    I use a different proxy service, in order to make it work with with O365 i had to disable this checkbox.

  15. Anonymous says:

    Update the steps, Microsoft

  16. João Vitor says:

    Update the steps, Microsoft [2]

  17. Dan Brown says:

    Please update this

  18. steve327 says:

    I agree, please update.

  19. Eugene Humbert says:

    We’ve a client who is considering going to Office 360. We host them, and at this time, provide the mail servers for them. If they go to Outlook 365, how will this effect their branding, vis a vis having their mail appear to come from/to our servers, or
    would our mail system be cut out of the picture entirely?

  20. Bulletproof says:

    Instructions don’t work.

  21. saravanan says:

    Yes, Fails 1 . C there is no option on Office 365

  22. Ken Howe says:

    This article is out of date and should be removed

  23. John Berger says:

    Still needs to be updated

  24. Srini says:

    Hi I need to configure my home laptop (outlook 2010), anywhere outlook – my office using outlook 365, they are not giving me the exchange server name or proxy or anything, i have only my e mail id, i have tried many ways but not able
    to connect, please let me know how I can get through this – thanks, outside office I am using –, my office laptop is working without vpn (anywhere outlook), I copy the exchange
    server details even then no use

  25. Darryl Gulson says:

    This information seems to be out of date…

  26. Norm says:

    the "help->about" option does not appear to be available in current version.

  27. Ben Hill says:

    You will need to update Outlook 2007 to SP2 and then run the Office 365 Desktop Setup Tool (login to Office365, Settings (gear), Office 365 Settings, Desktop Setup, Set up button), this will also install a couple of other updates that you will need. Once
    this is completed, the autodiscover process will complete as normal. Office SP2 required reboot, other items did not.

  28. Michael Crosby says:

    Any updates to this article? Step 1c does not work as there is no "About" under the ? icon.

  29. GRrrrr says:

    There is NO "ABOUT" under Help!!!! I cannot find the information required for the manual configuration!!!

  30. Ilkin. says:

    There is no About in In the upper-right corner of the page, click the Help icon (the question mark) anymore.

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