<![CDATA[Application Error The application was unable to start correctly "(0xc0000034)."]]>Application Error The application was unable to start correctly "(0xc0000034)."

I'm on Windows 10 Pro.
After the last Opera update, I wasn't able to run Opera - got the a/m error. I tried to restart my PC - no help.
The last error was as follows:

C:\User\Username\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Opera Browser.lnk
The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detail.

Please advise.

]]>https://forums.opera.com/topic/70586/application-error-the-application-was-unable-to-start-correctly-0xc0000034RSS for NodeWed, 22 Jul 2026 17:49:25 GMTSun, 17 Mar 2024 21:01:18 GMT60<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Tue, 04 Feb 2025 01:09:40 GMT]]>@nadeosvk it worked for me! Thank you so much!!!

]]>https://forums.opera.com/post/370027https://forums.opera.com/post/370027Tue, 04 Feb 2025 01:09:40 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Tue, 21 Jan 2025 19:12:19 GMT]]>@nadeosvk Literally logged in just to say Yes This Works my fellow pc brothers and sisters This Is The Way.

]]>https://forums.opera.com/post/369025https://forums.opera.com/post/369025Tue, 21 Jan 2025 19:12:19 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Mon, 08 Jul 2024 09:20:35 GMT]]>for me it seems that the problem was in the newest update of opera. Yet, I didn't need to uninstall anything. This is what I did, with all the bookmarks and history saved:

  1. I navigated to the path were the problem occurred and deleted Opera Browser.lnk shortcut.
  2. When I looked where opera.exe is located (in my case C:\Users\Username\AppData\Local\Programs\Opera) and in the same folder I found opera-new.exe file I lunched this one and opera run without any problems. Latter I noticed that opera-new.exe file was automatically substituted with opera.exe file and the opera-new.exe was no longer there.

Problem fixed, hopefully for u as well

]]>https://forums.opera.com/post/355138https://forums.opera.com/post/355138Mon, 08 Jul 2024 09:20:35 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Fri, 28 Jun 2024 08:46:55 GMT]]>While this is not a good solution i had a full setup.exe for an older version of Opera and it worked. I have gone back to 68.0.3618.125 and it does not allow me to upgrade. But at least i have opera working. I did lose all my bookmarks. I am reassessing opera as a result, which for me is a big thing because i have been using it since 2015.

]]>https://forums.opera.com/post/354478https://forums.opera.com/post/354478Fri, 28 Jun 2024 08:46:55 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Thu, 27 Jun 2024 13:59:58 GMT]]>Using Windows 10 Pro. Every unnecessary update of Opera seems to screw up Opera. And this was the latest one. Unable to open or do anything else with Opera. But my solution to all things Opera is to use Revo uninstaller to nuke it, supposedly including all it's traces, and then reinstall Opera. None of the above sugestions worked. Nuked Opera, reinstalled, and it worked as a perfect update, even leaving my history and bookmarks intact. How it left my history and bookmarks intact this time, I don't understand, but it did.

]]>https://forums.opera.com/post/354413https://forums.opera.com/post/354413Thu, 27 Jun 2024 13:59:58 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Tue, 18 Jun 2024 10:31:46 GMT]]>@nadeosvk Hi, unfortunately not working for me...when I try to install from the folder, it shows an error ".pak files are corrupted".
I'm stuck: I can't uninstall, launch, update or reinstall Opera.
Any advice or update on the problem?

]]>https://forums.opera.com/post/353696https://forums.opera.com/post/353696Tue, 18 Jun 2024 10:31:46 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Wed, 12 Jun 2024 21:45:20 GMT]]>@nadeosvk Worked for me! Thanks.

]]>https://forums.opera.com/post/353202https://forums.opera.com/post/353202Wed, 12 Jun 2024 21:45:20 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Mon, 03 Jun 2024 03:51:00 GMT]]>@nadeosvk this worked, thank you.

]]>https://forums.opera.com/post/352228https://forums.opera.com/post/352228Mon, 03 Jun 2024 03:51:00 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Mon, 27 May 2024 11:49:35 GMT]]>I eventually also got it to work.
I tried uninstalling, which always led to the same error, but in fact files and/or registry settings had been changed/deleted.
It needed a reboot of the system, but after that I was able to re-install Opera and everything works properly again

]]>https://forums.opera.com/post/351651https://forums.opera.com/post/351651Mon, 27 May 2024 11:49:35 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Sun, 26 May 2024 21:39:41 GMT]]>I found a solution. You have to reinstall opera, but first, go to C:\Users\CURRENTUSER\AppData\Local\Programs\Opera
and find the latest version folder, currently it's 109.0.5097.35. Rename that folder, for example 109.0.5097.35xx and then go inside it, and run the installer as Administrator(important). Opera will reinstall and work again

(copyed my answer from an another thread)

]]>https://forums.opera.com/post/351608https://forums.opera.com/post/351608Sun, 26 May 2024 21:39:41 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Sun, 26 May 2024 19:45:47 GMT]]>Trying to uninstall leads to the same error.
Trying to re-install / over-install the latest and greatest, downloaded from the website, starts but eventually runs into the same error

Completely stuck

]]>https://forums.opera.com/post/351604https://forums.opera.com/post/351604Sun, 26 May 2024 19:45:47 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Sun, 26 May 2024 19:24:11 GMT]]>Same here !

]]>https://forums.opera.com/post/351600https://forums.opera.com/post/351600Sun, 26 May 2024 19:24:11 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Sat, 18 May 2024 00:08:51 GMT]]>I have just developed this issue as well, did you ever find a solution?

]]>https://forums.opera.com/post/350911https://forums.opera.com/post/350911Sat, 18 May 2024 00:08:51 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Mon, 01 Apr 2024 15:49:39 GMT]]>You can temporarily create a new use account on Windows (local one not tied to a Microsoft account), log into it and try things there. If that works, then you'll know it's just your normal user account that's messed up.

If that's the case maybe a good Windows registry cleaner program might help. See https://forums.opera.com/post/140034 for one that an Opera user found useful for something else.

]]>https://forums.opera.com/post/347031https://forums.opera.com/post/347031Mon, 01 Apr 2024 15:49:39 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Mon, 01 Apr 2024 15:44:18 GMT]]>You can try to uninstall and reinstall the last Windows update. Or, first try to just uninstall and reinstall the last Windows update for .NET.

I've see on Google that a few said that the 0xc0000034 error can be caused by a corrupted .NET Framework install. I don't know why that would affect Opera though. Opera doesn't use it and as far as I know, neither does the installer/uninstaller.

There are also a couple ways to repair the .NET Framework shown at https://www.youtube.com/watch?v=qHvT8Q8Ogkc and https://www.youtube.com/watch?v=Wf8YTe_4HQ0. Attempt those at your own risk though. And, again, I'm not sure how that would help with Opera.

]]>https://forums.opera.com/post/347030https://forums.opera.com/post/347030Mon, 01 Apr 2024 15:44:18 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Sun, 31 Mar 2024 10:35:48 GMT]]>@burnout426 I have the same issue, I tried reinstalling the runtime, I tried everything google had on the issue. No help. I can't even uninstall Opera because it gives the same error.

Can't even use the installer to update.

]]>https://forums.opera.com/post/346929https://forums.opera.com/post/346929Sun, 31 Mar 2024 10:35:48 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Mon, 18 Mar 2024 09:43:12 GMT]]>Open up the Windows Even Viewer and find that error and look at the details.

side-by-side usually means a dll problem like the Visual C++ Runtime as mentioned in this post about a different error.

If it just happened after an update though, it could be your anti-virus blocking the new version. Or, you might have a corrupted install. You can uninstall Opera (don't choose to delete your data when uninstalling) and reinstall Opera.

]]>https://forums.opera.com/post/345695https://forums.opera.com/post/345695Mon, 18 Mar 2024 09:43:12 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Mon, 18 Mar 2024 03:51:18 GMT]]>I tried but didn't find anything relevant.

]]>https://forums.opera.com/post/345671https://forums.opera.com/post/345671Mon, 18 Mar 2024 03:51:18 GMT<![CDATA[Reply to Application Error The application was unable to start correctly "(0xc0000034)." on Sun, 17 Mar 2024 22:15:00 GMT]]>@mike-o Did you try searching for that error?

]]>https://forums.opera.com/post/345631https://forums.opera.com/post/345631Sun, 17 Mar 2024 22:15:00 GMT