How to change the default browser in Outlook?
Have you ever noticed that when clicking a hyperlink in an Outlook email, the web page automatically opens in your default browser? For some users, they prefer to open the web pages in other browsers like Firefox, Google instead of the default browser.
By default, Outlook uses your system's default browser to open hyperlinks. As far as I know, there is no way to have Outlook uses a different browser other than the one set as default on your computer system.
If you follow the steps in this tutorial to change the default browser in Outlook, the default browser on your computer system will also be changed.
Change the default browser with changing the default program setting in your computer
Change the default browser with changing the default program setting in your computer
You can change the Outlook default browser by changing the default program settings in your computer.
1. In Windows 10, please right-click the Start button in the computer, and choose Control Panel from the context menu, see screenshot:

1. In Windows 7, click Start button, and then choose Control Panel, see screenshot:

2. In the Control Panel window, click Programs option, see screenshot:
3. And then go on clicking Default Programs option in the Programs window, see screenshot:
4. In the Default Programs window, please click Set your default programs option, see screenshot:
5. In the popping up Set Default Programs window, specify one browser you want to use from the Programs list box, and then click Set this program as default option in the right section, see screenshot:
6. Then click OK to close the windows, from now on, when clicking the hyperlink in Outlook, it will be opened with the browser you have specified.
Note: The changed browser will be applied on the computer.
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