Vikunja - Desktop App error Could not find or use Vikunja installation

[subven]

Hrrrrrmmmm I can't reach the API via desktop app. Browsing https://domain.com/api/v1/info gives me the correct response but the app's login screen always states "no installation found".

curl -X GET https://domain.com/api/v1/info
{"version":"v0.24.6","frontend_url":"https://domain.com/"~~~

I tried:
https://domain.com:3456/api/v1/
https://domain.com/api/v1/
https://domain.com

What did you guys do to make it work?

[robi]

@subven did you log in first?

[subven]

@robi, you need to specify an API URL first. This is literally the first screen when you open the app:

[james]

Hello @subven
I was not even able to install the Dekstop App on Windows for version 0.24.6 since the .exe is missng and it's just a Vikunja Desktop-v0.24.6.exe.blockmap https://dl.vikunja.io/desktop/0.24.6/

Even when I use the older 0.24.4 or the new RC-2 I can see the error.
But, what is odd, with both versions, I can see in the Cloudron Log that the request in fact do respond:

Oct 22 16:57:27 2025-10-22T14:57:27Z: WEB ▶ -REDACTED- GET 200 /info 357.427µs - Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) vikunja-desktop/v1.0.0-rc2 Chrome/138.0.7204.235 Electron/37.3.1 Safari/537.36
Oct 22 16:57:27 2025-10-22T14:57:27Z: WEB ▶ -REDACTED- GET 200 /api/v1/info 235.855µs - Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) vikunja-desktop/v1.0.0-rc2 Chrome/138.0.7204.235 Electron/37.3.1 Safari/537.36
Oct 22 16:57:27 2025-10-22T14:57:27Z: WEB ▶ -REDACTED- GET 200 /api/v1/notifications?page=1 9.349822ms - Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

[james]

I was able to attach a debugger to the Desktop application and had to override some source code to enable the menu bar.
With the menu bar, I could open the Developer Tools and could inspect errors and the network.

There seems to be a CORS issue.

[james]

Figured it out.
You need to edit your /app/data/config.yml of your Vikunja app and add the following lines:

cors:
  enable: true
  origins: "*"

restart the app and now your Desktop Vinkunja Client should be able to connect.