MicrosoftEdge / MicrosoftEdge/WebView2Feedback

[Problem/Bug]: Navigating to certain URI schemes (e.g. mailto:, calculator:, res:) causes the webview2 process to crash at specific conditions

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#5,322 3 comments 1 reaction 1 assignee View on GitHub

@dhveerap is already working on this.

Since Oct 17, 2025.

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Description

open any page,
then navigate to mailto:test : work as expected (a dialog prompt appear),
then, without reloading or changing the page, navigate again to mailto:test : this crash the wv2 process.

note : add_LaunchingExternalUriScheme is not used.

the same thing happens with "calculator:", "ms-settings:", "tel:", at first navigation, a prompt dialog appear,
at second navigation, the process crash.

and also "res:" crash the process immediatly at first navigation.

Probably there are others.

wv2 137...93

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