After a bit more digging, seems I had accidentally activated Opera Turbo. Solved.
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RE: No longer able to load pages in Opera with profileOpera for Windows
No longer able to load pages in Opera with profileOpera for Windows
I opened Opera this morning, and it is no longer able to load most websites. The sites give this message: The webpage at http://xxxx/ might be temporarily down or it may have moved permanently to a new web address. Some sites like Google continue to load, so it seems like a possible DNS issue.
However, if I open a private window, the sites will load correctly. Also, sites load correctly in other browsers.
I have a lot of bookmarks and saved passwords that I want to keep, so I don't want to entirely delete my profile. What can I do to get Opera to load my pages again?