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[flutter_tools] Handle WDAC block error code 4551 for impellerc #190232
On Windows, when impellerc is blocked by Windows Defender Application Control (WDAC) or Smart App Control (SAC), it throws a ProcessException with error code 4551. Currently, ShaderCompiler._isBlockedBySecurityPolicy only checks for error code 1260. We should update the tool to also check for 4551 and exit gracefully.
Note: This issue was identified as a top-10 crasher in the Flutter stable release version 3.44.8.
This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.
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[flutter_tools] Reference issue flutter#190232 in WDAC regression test
[flutter_tools] Handle WDAC block error code 4551 for impellerc (flut…
github-actions commentedon Aug 19, 2026
This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of
flutter doctor -vand a minimal reproduction of the issue.