2 log locations · Windows
Microsoft Edge WebView2 Runtime logs to %ALLUSERSPROFILE%\Microsoft\EdgeUpdate\Log\MicrosoftEdgeUpdate.log on Windows. 1 other Windows log location is recorded below.
Paths are printed exactly as Microsoft Edge WebView2 Runtime writes them. Environment variables like %LOCALAPPDATA% and $XDG_STATE_HOME are never expanded, so a path can be pasted straight into a shell. Where a path differs between installer types or shipping flavours, each one is racked as its own card below - why that happens.
Finding your way around Windows.
%ALLUSERSPROFILE%\Microsoft\EdgeUpdate\Log\MicrosoftEdgeUpdate.log%WINDIR%\Temp\msedge_installer.log