How to Change Default Browser on Outlook

On Windows

1. Open the Outlook app.
2. Click the File menu at the top.
3. Then, select Options in the bottom left corner of the window.
   
4. On the next prompt, select Advanced from the sidebar.
5. In the right pane, scroll to the Link Handling section.
6. Then, select whether you like to open links in Outlook using Microsoft Edge or the Default Browser (system) next to the Open hyperlinks from Outlook in field.
   
7. Click OK.

For other Outlook apps running on older versions, change the default browser using the Windows settings as follows.

1. Press Windows + I key to open the Settings app.
2. Select Apps > Default apps.
   
3. For Windows 10 users, select the preferred browser under the Web browser section. On the next prompt, click Switch anyway.
   
4. For Windows 11 users, scroll to or search for the browser you want to set as default. Then, click Set default next to Make <browser-name> your default browser.
   

On Mac

1. Click the Apple icon from the top menu bar and select System Preferences.
   
2. Then, select General.
3. Scroll down to Default web browser.
4. Click to expand the dropdown next to it.
   
5. Choose the preferred browser installed on your system.