Spellchecker in OnlyOffice not working

ChristineSchulz

Hi! I am using Firefox (140.0.4, without Extensions) on Ubuntu on the https://cryptpad.fr page to work on docx files in OnlyOffice. Although marked as done here, and despite the feedback, it does not work. Version is 2025.6.0.

Any ideas on how to get it to run?

Mathilde

Hello,

Can you please follow the few steps listed in the Common Issues section of our documentation FAQ and report back here?

nanoc

Same problem here. No spellchecking on either cryptpad.fr or a self hosted instance recently upgraded to 2025.6.0. Tested on Firefox 141.0.3 (no addons, no difference whether in regular or private browsing mode) and on Edge 139.0.3405.86.
Spellchecking in Rich Text documents works.

nanoc

Ok, got it. Stupid me, I needed to actively switch to a valid dictionary in the bottom bar. Default seems to be the language detected by the browser or wherever it got it from, but this only says "English". Selecting something like "English - United States" activates spell checking from the point of the cursor onward.