No, I didn't find something so far, but I didn't look for it the last time. I guess I'll migrate the users to Vivaldi anyway soon. Even though I'm not aware if its any beter in this regard with Vivaldi in the moment.

@mmitek: Thanks for your comment. I'll write a bug-report for that "issue".

Well, I'd like to ask a question about encryption, or lets say the "Lock Symbol". I administrate some servers of customers, and I have the lock symbol appear on one of them, and not on the others (saying the certificate couldn't be checked). I have compared the settings of the SSChannel and the Certificate Authority to be similar, so Id like to know why one server being displayed with no lock symbol (all other browsers are happy with the certificate) and the other is ok. BUT: For security reasons, I don't want to write the server addresses in the forum, so, having "non public" contact to an Opera Dev or Supporter would be needed.

If you disallow write access to the file "Preferences" in the profile, the user can't change any settings at all (at least all settings that are controlled by that file). This is not what I want to do. I want to override SOME usersettings, not all of them.

@zalex108: Changing the default options still allows the user to override it with custom settings. I'd need a way to distribute default settings to the user and make it impossible for them to override them. As said, with original Opera this was easily possible.

Well, glad that Vivaldi will soon get out of Beta. I think its more likely that Vivaldi will support Business Customers than Opera. Poor Opera, once the greatest Browser, now a pale shadow of the past...

I miss the old days with von Tetzchner in command. Back then, it was possible to directly contact the developers via desktop team blog. Today, it seems impossible to get in contact with anybody at opera, if you don't own a social media account like twitter aso... Can someone please point me to a mail contact at opera. I only found a form for media and business inquiries, but none for support.

Here's how it works for Chrome:
http://jackstromberg.com/2013/08/configuring-google-chrome-via-group-policy/

I'd need something simmilar for Opera....

Thanks for your hint. But I allready knew, where the user profile is stored

I know, that in theory I could edit this file, but its extremely complex to do it with a script, and I cant protect from users setting the options back.

In old Opera, I could put all preconfigurations into the file operaprefs_fixed.ini. The settings there were aplied to ALL userprofiles on this PC, and users couldnt change it. I give you an example:

Image you want all users in your network to NOT use the Flash-Plugin (because of the current security issues). In Opera 12 you put the path to the flash-plugin into the right section of operaprefs_fixed.ini and you are done.
In Opera 27, I'd have to read the preference file with a powershell script, parse it so it finds the right plugin, and set it to false. Since the settings are not on ONE line in the preferece file in Opera 27, this would be challenging, and even when you have done it, the user can simply activate the plugin in the UI again.

As I said before, I need a configuration file or a GPO, that I can preconfigure user profile (like disabling plugins) without the user beeing able to override the setting.

I need a way to pre-configure opera-profiles for users in a corporate network. In Opera 12.x, this was easy by placing a operaprefs_fixed.ini into the system32 folder. I didn't find any solution for the "new" Blink-based Opera versions. I need something like an ini-file, or an GPO to preconfigure user-profiles.

Anyone knows how to do?