Posted 21 May 2017 - 10:06 AM
Yep, this sounds like Opera was set as the default browser during installation, which every browser I know of tries to do and asks about during installation. It's sometimes easy to miss this if it's in a collection of checkboxes or if you get into the "answer in the affirmative" groove without carefully watching what you're saying yes to.
If you accidentally change your default browser you can change it back to whichever one you'd like that's installed on your system. The exact way of doing this varies by what version of Windows you're running (or other OS you're running).
Brian AKA Bri the Tech Guy (website in my user profile) - Windows 10 Home, 64-Bit, Version 1809, Build 17763
Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts. Broad, wholesome, charitable views of men and things cannot be acquired by vegetating in one little corner of the earth all one's lifetime.
~ Mark Twain