MicrosoftEdge / MicrosoftEdge/WebView2Feedback

[Problem/Bug/Regression]: visiting any URL terminated by the ‘%’ character shutdown webview2

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#5,605 1 comment 0 reactions 1 assignee View on GitHub

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Since May 27, 2026.

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Description

since runtime 144,
visiting some URL terminated by the ‘%’ character shutdown webview2 with an error process failed (unexpected).

Urls like www.example.com%, about:blank%, edge://abc%, edge://crashes%,
Runtime 143 nicely redirect to a about:blank#blocked page (for edge://abc%)
or return an error (for www.example.com%).

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