iCloud login via Ubuntu and Firefox does not work

Currently, it is not possible to log in to iCloud on Ubuntu. When enter the password, I get allways "Identity could not be confirmed".

Tested with Ubuntu 24.04.5 and firefox 142.0 and other Ubuntu-Releases.

iCloud Login with Windows 10 and Firefox 142.0 does work.

It always worked in the past with Ubuntu: are there any known issues?

Posted on Aug 25, 2025 3:22 AM

Top-ranking reply

gup49

Level 1

14 points

Posted on Sep 16, 2025 1:54 AM

In Firefox, open about:config address and add the parameter general.useragent.override to override the userAgent string. To get the right value,

Open the console (F12)
Type navigator.userAgent
Copy/Paste the returned value into general.useragent.override parameter, then remove " Ubuntu;"

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17 replies

Sep 9, 2025 11:02 AM in response to S_S_S_S

I can confirm that this just worked for me. I can login now.

Sep 13, 2025 5:06 PM in response to S_S_S_S

Clearing icloud.com from the cache worked for me too, on Windows.

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iCloud login via Ubuntu and Firefox does not work

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