Solved Can't update/install Vivaldi - "Installation failed due to unspecified problem."

RealMat0s

This error occurs when, by mistake, Windows starts the installation process twice in the background.

Check your task pane and verify that there is nothing from Vivaldi open in the background. Or even if you already have Vivaldi installed and want to perform an upgrade.

If all else fails, reinstall Vivaldi from scratch by deleting all data and previous installation.

ap0st0l

@doctorg
Yes, that's the first thing I did.
No, anti-viruses these days are more like adware causing only problems

ap0st0l

@realmat0s Ok, I guess I'll reinstall...

ap0st0l

Ok, it looks like the installation somehow stopped being recognized by Windows... Maybe because I was jumping between Windows 10 and Windows 11 some time ago.
Even when I tried to uninstall it, I had the error like it's not existing:

I had to clean it with the Revo Uninstaller and then I could install it again.
Thanks.

superyiwu

I do have the very same problem. I tried Windows 11 and changed back to Windows 10 and ever since i cannot update oder uninstall Vivaldi

ap0st0l

@superyiwu You must remove all remaining trash with for example Revo Uninstaller or some other program which removes program's leftovers. Then you will be able to install it clean.

Zalex108

@superyiwu

Hi,
Before Remove AnyThing, BackUp your Profile.
Even if you are using Sync.

Follow the Tip

--
"Off Topic Tip"
Follow the Signature's Backup | Reset link.
Take the opportunity to start a Backup plan and even create a Template Profile.

Windows 7 (x64)
Vivaldi Backup | Reset + Extra Steps

superyiwu

Yes, it worked more or less with Revo Uninstaller. I did not backup my profile, but that is fine. Most things are in the sync. Thank you both for your fast replies.

pra300

I have been facing the same issue since last few updates.
I thought of replacing files manually and it worked!

Let update download files and restart browser. Now you will get "Installation failed due to unspecified problem." error - don't click on ok or close.
It will create Temp folder inside Vivaldi folder with update files
C:\Users\Administrator\AppData\Local\Vivaldi\
It will have extracted folder with update number as folder name
https://prnt.sc/dt89yWUPV_wh

Copy its content and paste into Application folder
C:\Users\Administrator\AppData\Local\Vivaldi\Application
You can delete older version folder and also close error window.

Done!

dem1

@pra300 said in Can't update/install Vivaldi - "Installation failed due to unspecified problem.":

I have been facing the same issue since last few updates.
I thought of replacing files manually and it worked!

Thank you for sharing. I'd never experienced this problem 'til now, and your solution worked for me as well!

I had temporarily created a separate standalone installation a while back for testing purposes. My vivaldi_installer.log file shows that the update installer was trying to access this deleted folder, which seems odd. I had unchecked "Make standalone Vivaldi available as a default app" when I installed it and assumed that all traces of it were long gone. But apparently not.