JSONedit

Thank you so much! It now works! I believe it was indeed the absolute url as i had it under desktop instead of directly installing in the Drive C, E etc..

Appreciate it alot sir! Happy holidays!

Thanks so much for testing. Appreciate it a lot! Also merry xmas!

Now retesting

I created an "Opera" folder on my USB stick with drive letter 'E'. As in, "E:\Opera".

I launched the Opera installer, clicked "options", set "install path" to "E:\Opera", set "install for" to "standalone installation", unchecked "import data from default browser", and installed.

When that Opera loaded up, I added https://addons.opera.com/en/extensions/details/ublock/ to Opera as a test for an official packed extension. After the extension was installed, I pinned it to the address bar.

Then, I created a folder named "Mask as Chrome" at "E:\Opera\Mask as Chrome" for an unpacked extension test.

Then, I download "mask-as-chrome-0.1.nex" from here, extracted it, and copied its manifest.json and background.js files to "E:\Opera\Mask as Chrome" so that their paths were "E:\Opera\Mask as Chrome\manifest.json" and "E:\Opera\Mask as Chrome\background.js" respectively.

Then, I went to the URL opera://extensions, turned on developer mode, clicked "load unpacked" and pointed it at the "E:\Opera\Mask as Chrome" folder. The extension installed fine and I pinned it to the address bar also.

I closed and opened that Opera multiple times to make sure the extensions where still installed.

I also checked "E:\Opera\profile\data\Preferences" with JSONedit in tree mode. Under root/extensions/opsettings/the_unpacked_extensions_id", the path for the extension was listed at "E:\Opera\Mask as Chrome".

Then, I unplugged the USB stick.

Then, on another computer (Windows 11 also), I plugged the USB stick to browse its contents. I noticed that on this computer, the drive letter was 'D' instead of 'E'. So, I went into Disk Management in Windows, right-clicked on the drive letter for the drive, went to "change drive letter and paths", and changed the drive letter to 'E' to match the drive letter the USB stick had on the first computer.

Then, I ran "E:\Opera\launcher.exe" to launch that Opera and both the packed and unpacked extensions were still there, installed, and enabled. I close Opera and and reopened Opera multiple times just to make sure the unpacked extension was still installed, and it was.

I also verified with JSONedit that the path in the Preferences file for the unpacked extension was still "E:\Opera\Mask as Chrome".

So no problems for me.

Hope that helps.

(You can look at manifest.json in my "Mask as Chrome" test extension) to see how it has no ID and no update URL and no key or anything like that. Maybe that's the difference.)

I also checked so its absolute dir and same.. any other solutions to try?

First, try installing an extension from addons.opera.com to see what happens when you switch computers. Does that one stay installed? Does it also stay active? If I remember correctly, the extension should at least stay installed.

If that's still the case, and it's just not working with loading unpacked extensions, it could just be due to a path issue? Does the drive latter stay the same on all computers? The stored path to the extension's folder is absolute, so it could fail if the path changes.

I'll test too when I get a chance.

But once I copied the portable opera folder and moved to my other computer the I extension folders were there but I needed to Load unpacked extension again.

Is there a way to make it already save and activated so I don't need to unpack the extension again? once i give my opera portable to other people?

Which deletes it. I wonder why?

The "extensions" folder in the profile folder is not for users to put things in. It's for Opera itself to place installed extension folders and files there. So, in short, if Opera didn't put something there itself, it's removed to protect your profile from tampering.

Desktop\Portable-Opera\profile\data\Extensions
Folder and then
go to the "load unpacked" at opera://extensions opera://extensions

Which deletes it. I wonder why?

But I will try to put it inside the root folder now of
Desktop\Portable-Opera\ instead and then load unpacked

Or, are you packing your extension as an nex or crx file and dragging it to the opera://extensions page?