Hello @Heiko ,
To summarize this issue. If anyone has the same problem and comes to this page, please first check whether you have created the resource file according to the steps in the official documentation.
https://learn.microsoft.com/en-us/windows/uwp/app-resources/localize-strings-ui-manifest
Create a Resources File (.resw) for the default language.
- Under your project node, create a new folder and name it
Strings
. - Under
Strings
, create a new sub-folder and name iten-US
. - Under
en-US
, create a new Resources File (.resw) (under the XAML file types in the Add New Item dialog) and confirm that it is namedResources.resw
.
Thank you.
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