Why don't the links work in Outlook?
If you receive the following error messages when trying to open a link in Outlook, it's usually because you haven't set a default browser.
Your organization's policies are preventing us from completing this action for you. For more info, please contact your help desk. 
How do I solve this?
To resolve this, select a default browser. To do this, follow the following guide: Change your default browser in Windows 10 (microsoft.com)
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