How to change the language of the Microsoft Loop DESKTOP app (so not the webinterface)

it is amazing on Microsoft can´t even solve such a simple problem, more than one year and nothing solved

[FIXED] [WORKAROUND]

After a long time without the proper answer/fix/feature, I've decided to investigate it.
I've ran some tests and found out that the PWA installed in my Laptop opened in pt-BR with my Work account and in en-US with my personal account.
So, after inspecting every request and opening every file (AppManifest.xml and so on...) I've found an extension that got the job done.

STEP BY STEP

1. Add the Requestly Extension to your Browser.
   • Edge Requestly - Intercept, Modify & Mock HTTP Requests - Microsoft Edge Addons
   • Chrome Requestly - Intercept, Modify & Mock HTTP Requests (google.com)
2. Open the Extension
3. Create a new rule
   1. Use the "Query Param" type of rule
      1. -- Options
         • URL
         • Wildcard (Default is "Contains" you should replace it)
         • https://loop*microsoft/* (PWA may use the old URL, without the .cloud.microsoft, so I've adapted this to work with both)
         • Param locale
         • Value en-us (en-US for English, use your desired language)
4. Save the Rule
5. Test the rule using the following URL https://loop.cloud.microsoft/?clientType=pwa

KNOWN ISSUES

• First time you open MS Loop (PWA install for Desktop) it may open in the wrong language, press CRTL + R to refresh and it adjusts the language.
• Sometimes the Extension Rule does not work. Delete it and create a new one, it should do the trick.

This is finally the only thing, that works to change language of Loop App (which is just a website opened in edge).

Is there some addon to do this, which doesn't require login?

Wish Microsoft could add a language selector to loop.

What setting determines the language Loop (edge) selects? It's not the browser language, not OS language, not Loop page in Edge language (this only works when installing/starting the App from Edge with wihle on loop.cloud.microsoft?locale=en-us ; when starting from Taskbar doesn't work.

Many users have Loop in japanese (HQ in Japan), which is annoying...

That does not change the interface language, This option is only for the spell checking.

Hello Jacques,

Thank you for posting in Microsoft Community.

Based on the description, there is issue with the language shows in Microsoft Loop desktop application. Let us see on what we can do to help address your concern.

Before we proceed any further, we would like to set your proper expectation that Microsoft Loop is still in public preview and users may experience known and new issues. During this preview, we will need your feedback to help us improve your experience.

To change the language of the Microsoft Loop desktop app, you can follow these steps:

1. Open the Microsoft Loop app on your desktop.
2. Click on the three dots in the top right corner of the app.
3. Select "Settings" from the drop-down menu.
4. In the Settings menu, click on "General" in the left-hand menu.
5. Under "Language", select your preferred language from the drop-down menu.
6. Close and reopen the Microsoft Loop app for the changes to take effect.

If your preferred language is not available in the drop-down menu, you may need to install the language pack for that language on your computer.

If the above steps does not works, please provide your experience as feedback to our developers. They'd love to hear from you about what's working well, what's not, and any ideas for improvements, including possible new features and functions. Your contribution will help us improve the user experience for you and all users around the world.

During this preview we want to hear from you to help improve your experience – so send us your feedback in the app to help us shape the journey.

In the bottom right corner, select Help> Give feedback.

On Android or iOS, tap your profile picture at the top left to find Help and feedback.

Link: Get started with Microsoft Loop - Microsoft Support

Regards,

Prince R

Microsoft Moderator