Antiy-AVL detected Trojan/Win32.Possiblethreat
Bkav Pro detected W32.AIDetectMalware
TrendMicro-HouseCall detected TROJ_GEN.R002V01K523
Trapmine detected Malicious.moderate.ml.score

Heuristic detection. They're guessing based on behavior and machine learning etc. Probably flagged the Opera installer because it's the net installer that fetches Opera's program files from Opera's servers. They probably wouldn't have a problem with Opera's offline package that includes the program files.

Opera's installer is also compressed with UPX to make it smaller. Some engines consider this malicious even when it's not.

Those detections all look like false positives to me.

@sarunas123 hey, did you find out what it was and could you fix it? Asking cause recently I've had the same problem.

Scan your system with the fresh version of Malwarebytes to see if it gets rid of the malware and the extension.

One thing that you can try to access your browser is check for any browser reset options. It would get you off all the cache, history, download data, plus any malicious cookies or content that is preventing you to run google searches. Let me know if it helps! You may also try deleting the browser and reinstalling it to check if resolves the issue.

@banshior I have the same problem, I had to uninstall Opera because otherwise it doesn't work at all if I can't run any search with it. Have you been able to solve it somehow?

@2lh8 Contact the service that included your site in a list of possible dangerous sites and ask them to remove your site from their list.

Also report the issue to Opera using the Report a Problem tool.

@leocg I had run an anti-virus and cleaned some other problems too but i also discovered the cause of the problem. Which is not related to the browser or at least not directly. It was a website that i am using that was having pop up ad system which normally always blocked by Opera but seems they either changed something or my Opera got lazy so it started to show itself. Added it to the adblock list as an extra measure which now closes the pop up easily. Though why it didn't before i do not know. Anyway thank you for helping me.

Check if there isn't any extension doing it Scan your system for malware

@christomanifesto

UPDATE ::

"Good news everyone" - it took a while, but the bookmarks DID reload.😁

They are recovered. Praise the Lord!
And thank you Opera!

While I am aware that exporting and SAVING bookmarks (MANUALLY) is (supposedly) possible using the Opera browser for desktop/laptop computers, my question is:

Is there a way to export (and save to an html file) bookmarks from any of Opera's mobile browsers?

Real back-up always needs redundancy.

If you are reading this Opera developers, please understand:
Opera IS a great browser, but so many things can go wrong.
A simple export-to-html would solve the data loss risk, in my humble opinion.

With thanks,

Christo

Opera supports search shortcuts, and unfortunately Z is the shortcut for Amazon. you either need to type a G before the whole thing (to force Google) or put it in quotes to force it to be considered a single search term.