Open Control Panel
Open your computer’s Control Panel, make sure your view is set to Large or Small Icons. Search for Mail
Select the Mail option from the control panel.
Click Show Profiles.
Select Add to create a new Outlook profile.
Name your profile(i.e. Microsoft 365). Select OK
Select Manual Configuration
Select Manually configure server settings or additional server types and click Next.
1: Set the server name to: outlook.office365.com and leave the Use Cached Exchange Mode box checked.
2: Enter your full email address (firstname.lastname@example.org)
Select More Settings
- Click the Security tab.
- Select Anonymous Authentication from drop down menu. NOTE: If Anonymous Authentication is not available you are missing some Windows Office updates. Install any Windows Office/Outlook Updates and try to setup account again.
1: Click the Connection Tab.
2: Check Connect to Microsoft Exchange using HTTP.
3: Click Exchange Proxy Settings.
1: Enter the following: outlook.office365.com
2: Check Only connect to proxy servers that have this principal name in their certificate and enter the following: msstd:outlook.com
3: Check both On Fast Networks…. and On slow networks…
4: Change the Proxy Authentication Settings to Basic Authentication.
Once the 4 steps have been completed, click OK.
Click Apply to make the changes you just made. Then select OK.
Test your newly applied settings
Enter the password associated with your new mailbox service on Office 365. If you would like Outlook to remember your password check Remember my credentials and select OK.
If you’re account was successfully added, your username and server should be underlined as shown above.This means outlook has verified your username and password and you have successfully configured your account in Office 365. Click Next.
If you would like Outlook to open the new profile by default whenever Outlook is opened, check the button for Always use this profile and select your new profile from the list and click OK.
If you would like to toggle between the profiles and be prompted every time Outlook is opened for a profile selection, click Prompt for a profile to be used and Outlook will ask which profile you would like to use when opened.
Click Apply and OK when finished.
Congratulations! You have successfully setup Outlook to connect to Microsoft 365.