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Custom Audio does not work on UWP as indicted in the docs
There are many reason cause this problem, During the testing there are many key points you need to know,
Please make sure your audio available and the audio file build action is Content
.
The audio will play when notification show, please make suitable file size.
and notification has type limit, please refer this document to chose which type you want use.
Supported audio file types include...
.aac
.flac
.m4a
.mp3
.wav
.wma
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