# Local language still leaks into UI even when force locale is used **URL:** \ **Category:** Support\ **Tags:** bug\ **Created:** [October 30, 2026, 12:16pm UTC](https://forum.duplicati.com/t/local-language-still-leaks-into-ui-even-when-force-locale-is-used/22855 "2026-10-30T12:16:28Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![shalmirane](https://forum.duplicati.com/user_avatar/forum.duplicati.com/shalmirane/32/3202_2.png) [@shalmirane](https://forum.duplicati.com/u/shalmirane)\ **Post date:** [October 30, 2026, 12:16pm UTC](https://forum.duplicati.com/t/local-language-still-leaks-into-ui-even-when-force-locale-is-used/22855/1 "2026-10-30T12:16:28Z")
Hi. My web UI still somehow leaks Czech language into it, even when - Windows is using English as its language - Duplicati server is set to English enforcement ![image](https://forum.duplicati.com/uploads/default/original/2X/f/fc44f70100c37ba9c75d7469c1b83b16f62a8625.png) _I do have Czech regional settings in Windows, though, which might interfere (but why the override is not working then), because I’m just incompatible with M-d-Y or am/pm or decimal dots, etc._ The funny part is the bottom setting, which is “Enforce en-US regional and language setting,” displayed in Czech 🙂 Duplicati 2.4.1.0, Windows 11 Pro 26H2. ---
**Author:** ![shalmirane](https://forum.duplicati.com/user_avatar/forum.duplicati.com/shalmirane/32/3202_2.png) [@shalmirane](https://forum.duplicati.com/u/shalmirane)\ **Post date:** [October 30, 2026, 12:27pm UTC](https://forum.duplicati.com/t/local-language-still-leaks-into-ui-even-when-force-locale-is-used/22855/2 "2026-10-30T12:27:50Z")
Which reminds me: I would love to be able to set a regional date and time format (dd-MM-yyyy, H:mm) in [https://app.duplicati.com/](https://app.duplicati.com/), as values like “10/29/26, 12:03 PM” really don’t work for me. The app UI is also missing a setting to show actual timestamps instead of goofy ones like “an hour ago”. _Also, for some reason I had to use the browser debugger to copy that timestamp, because the UI blocks copy/paste._ An unrelated issue with the app portal: while browsing it to see where else those date formats are used, I found a lot of new features like Links, but there’s no description of them whatsoever. They’re gated, and I can enable a trial, but I don’t know whether it’s something I need or want. For example, to find out what Managed Backup Users are, I had to google it. And no, it’s not backing up my mom’s PC, which is what I would have guessed from the name. ---
**Author:** ![kenkendk](https://forum.duplicati.com/user_avatar/forum.duplicati.com/kenkendk/32/5305_2.png) [@kenkendk](https://forum.duplicati.com/u/kenkendk)\ **Post date:** [October 30, 2026, 12:45pm UTC](https://forum.duplicati.com/t/local-language-still-leaks-into-ui-even-when-force-locale-is-used/22855/3 "2026-10-30T12:45:39Z")
> [@shalmirane](#): > > The funny part is the bottom setting, which is “Enforce en-US regional and language setting,” displayed in Czech 🙂 I cannot reproduce immediately, but it looks odd. The locale settings are in two places, the UI and the server-side. The string “Custom settings argument” is from the UI side, and the others are from the server side. The “Limit storage use” is perhaps not translated to Czech yet, so all the server-side strings are shown in the system default. If you use Developer Tools in the browser (usually F12) then reload the page and look for “systeminfo” being loaded in the Network tab: ![Screenshot 2026-10-30 at 13.35.19](https://forum.duplicati.com/uploads/default/original/2X/8/8c4f6fbfa4ec6f0613c703b89d178199a3a44ab8.png) The header `X-Ui-Language` is the one that tells the server what language to return the strings in. Can you check what your system is sending? > [@shalmirane](#): > > The funny part is the bottom setting, which is “Enforce en-US regional and language setting,” displayed in Czech 🙂 That option applies to the backups, not the server. So when the backups run, they are using `en-us` as the locale. There is currently no option to force the locale of the server on Windows (`LANG=en_US.UTF-8` is ignored on Windows). > [@shalmirane](#): > > Which reminds me: I would love to be able to set a regional date and time format (dd-MM-yyyy, H:mm) in [https://app.duplicati.com/](https://app.duplicati.com/), as values like “10/29/26, 12:03 PM” really don’t work for me. Go to the Settings page and then choose “en-GB” as the language as the language also provides the regional formatting. > [@shalmirane](#): > > Also, for some reason I had to use the browser debugger to copy that timestamp, because the UI blocks copy/paste. I think it is the tooltip that triggers on the mouse movements and that somehow prevents the selection. It does not happen everywhere, and double-click seems to work for me to select. > [@shalmirane](#): > > An unrelated issue with the app portal: while browsing it to see where else those date formats are used, I found a lot of new features like Links, but there’s no description of them whatsoever. The links feature is described here: > **[Connect with a link - Connecting to the Duplicati console | Duplicati](https://docs.duplicati.com/duplicati-console/connecting-to-the-duplicati-console#connect-with-a-link)** > > The Duplicati open-source client can run without a connection to the console, but connecting the client offers additional features, such as backup monitoring, remote management, zero-configuration storage and more. | This page describes how to... The managed backup service is described here: > **[Managed Microsoft 365 backup | Duplicati](https://docs.duplicati.com/duplicati-console/managed-microsoft-365-backup)** > > This page describes how to set up a fully managed Microsoft 365 backup that runs in the Duplicati Console The storage service is described here: > **[Duplicati Storage | Duplicati](https://docs.duplicati.com/duplicati-console/duplicati-storage)** > > This page describes how to use Duplicati Storage as the backup destination, and how to obtain a restore connection string to restore on another machine ---
**Author:** ![shalmirane](https://forum.duplicati.com/user_avatar/forum.duplicati.com/shalmirane/32/3202_2.png) [@shalmirane](https://forum.duplicati.com/u/shalmirane)\ **Post date:** [October 30, 2026, 1:54pm UTC](https://forum.duplicati.com/t/local-language-still-leaks-into-ui-even-when-force-locale-is-used/22855/4 "2026-10-30T13:54:33Z")
> [@kenkendk](#): > > The header `X-Ui-Language` is the one that tells the server what language to return the strings in. Can you check what your system is sending? It’s not present at all - the only place where I found it mentioned is main-XXX.js, but nowhere in headers, just the usual Accept-Language. ![image](https://forum.duplicati.com/uploads/default/original/2X/a/ab62b78717b31a53337d334cb950a9cc971614a5.png) ![image](https://forum.duplicati.com/uploads/default/original/2X/e/e52e8d94547d5a24840d5ed5b08479b64ef06830.png) > [@kenkendk](#): > > Go to the Settings page and then choose “en-GB” as the language as the language also provides the regional formatting. Thanks, that worked 🙂 > [@kenkendk](#): > > I think it is the tooltip that triggers on the mouse movements and that somehow prevents the selection. It does not happen everywhere, and double-click seems to work for me to select I can either select and double-click or nothing. E.g. in machines, Last Backup and Version are blocked from double-click too (and do not have tooltip). > [@kenkendk](#): > > The links feature is described here They would deserve to be linked in the portal itself - as a help button / info.