Opera 121.0.5600.0 developer update

[burnout426]

burnout426 Volunteer last edited by burnout426

Just get this in the log:

[0721/083921.093:INFO:opera\desktop\windows\installer\installation_package_impl.cc:172] Package is ready
[0721/083921.108:INFO:opera\desktop\windows\installer\steps\installer_steps.cc:482] Removing installed files.
[0721/083921.108:INFO:opera\desktop\windows\installer\steps\delete_file_step.cc:32] Deleting file C:\Program Files\Opera developer\121.0.5600.0\files_list
[0721/083921.109:INFO:opera\desktop\windows\installer\steps\delete_file_step.cc:32] Deleting file C:\Program Files\Opera developer\121.0.5600.0\root_files_list
[0721/083921.110:INFO:opera\desktop\windows\installer\steps\installer_steps.cc:569] Removing old files from installation root
[0721/083921.134:ERROR:opera\desktop\windows\installer\transactions\delete_file_operation.cc:102] Attempt to open the file for writing failed: The process cannot access the file because it is being used by another process. (0x20)
[0721/083921.134:ERROR:opera\desktop\windows\installer\transactions\delete_file_operation.cc:106] File removal failed
[0721/083921.148:INFO:opera\desktop\windows\installer\steps\clean_registry_step.cc:47] Cleaning up registry
[0721/083921.158:INFO:opera\desktop\windows\installer\steps\installer_steps.cc:246] Setting up the registry

The Opera developer folder is empty. From the log, it looks like it's trying to delete files that aren't there yet.

[burnout426]

burnout426 Volunteer last edited by burnout426

Standalone installation option works at least (to a fresh folder on my desktop). The current user and all users options fail.

[Dudikoff]

Dudikoff last edited by

Standalone fail https://ftp.opera.com/pub/opera-developer/121.0.5600.0/win/

[andrew84]

andrew84 @burnout426 last edited by andrew84

@burnout426 said in Opera 121.0.5600.0 developer update:

"Failed to prepare update"

The same here.

Also, according to the changelog it seems they decided to skip 136 version and update directly 135 > 137

I have no wish experimenting with all these installers, I just leave all the things broken.

[erdinc53]

erdinc53 last edited by

This update broke my browser, won't open.

[SiMcarD78]

SiMcarD78 @erdinc53 last edited by

@erdinc53: almost nobody managed to update

[erdinc53]

erdinc53 @SiMcarD78 last edited by

@SiMcarD78 I managed to download it, but the browser crashed.

[ralf-brinkmann]

ralf-brinkmann last edited by

Okay, I'm the exception. I have Opera installed as standalone version and I updated with the normal Opera_Developer_121.0.5600.0_Setup_x64.exe without problems.

[SiMcarD78]

SiMcarD78 last edited by

I was expecting a fixed release today.

[newton2346]

newton2346 last edited by

It also stopped working here after updating, but I accessed the installation folder and changed the executable "opera.exe" to "opera.exe.new" and "opera.exe.old" to "opera.exe". Then it ran normally.

[leocg]

leocg Moderator Volunteer @ralf-brinkmann last edited by

@ralf-brinkmann The standalone version updated fine here too.

When I try to update or even install the regular installation, an error happens.

[leocg]

leocg Moderator Volunteer @newton2346 last edited by

@newton2346 How did you update?

[newton2346]

newton2346 last edited by

@leocg: It had updated automatically but it gave an error when opening as reported by other users, so I did the procedure I mentioned above.

[ralf-brinkmann]

ralf-brinkmann last edited by

I noticed something else strange:
When I open the list of recently closed pages, I used to be able to click on an entry in the list with the mouse and the page would open right there. This doesn't work now. The page doesn't open, and I land on the first open tab. However, if I move the blue highlight bar up to the desired entry with the keyboard and press ENTER, the page opens.

W11x64, Opera x64 (standalone installation)

[ralf-brinkmann]

ralf-brinkmann last edited by

And one more thing:

This version of Opera shows me 7 unread news in the Facebook tab, but there are no unread news. Back to Opera 121.0.5593.0 Developer the problem is solved.

[sgunhouse]

sgunhouse Moderator Volunteer last edited by

I gather they pulled the update. When I checkjed a few minutes ago it said I was up to date and I still have the old version number.

[ralf-brinkmann]

ralf-brinkmann @ralf-brinkmann last edited by

** I forgot one thing:
I meant in the Windows taskbar. So, the communication between Opera and Windows seems to be somehow disrupted.

[andrew84]

andrew84 @newton2346 last edited by

@newton2346 said in Opera 121.0.5600.0 developer update:

to "opera.exe". Then it ran normally.

yes, but it opens previous version 121.0.5593.0.

[daria19]

daria19 Opera last edited by

Update: July 22, 2025

Hello everyone,

We want to sincerely apologize for the recent issue with our installer.

Unfortunately, a bug slipped through our testing process that affected installation for both the current user and all users. We’re truly sorry for the inconvenience this may have caused.

Thanks to your quick feedback, we were able to identify the problem early. We really appreciate your support and responsiveness – it made a big difference.

As a result, we’ve decided to temporarily remove the new installer and revert to the previous version to ensure stability. We’re currently working on a new developer release and plan to roll it out later this week.

Thank you for your patience and understanding.

[newton2346]

newton2346 @andrew84 last edited by

@andrew84 Right. I forgot to check the version.