Unity Issue Tracker - WebGL "Cross-Origin-Embedder-Policy: require-corp" HTTP header is included when multithreading is off
Fixed
UUM-66729
WebGL "Cross-Origin-Embedder-Policy: require-corp" HTTP header is included when multithreading is off
Unity: Web Platform
Fixed
6.0.X
2022.3.X
2022.3.10f1 onwards
Won't Fix
2023.3.X
2023.2.X
2023.2.0a16 onwards
Closed in favor of the 6000.x.x port
Cancelling this 2023.2 tech release issue since the support for this release has come to end of life. Cancelling this 2023.2 port case does not affect any LTS or Unity 6 Beta/Preview that remain open.
Reproduction steps:
1. Open the attached “WebGLRepro.zip” project
2. Build and Run the project on WebGL (File > Build and Run)
3. Observe the Player in the Browser
Expected result: iframe is shown on the localhost server
Actual result: iframe gets blocked due to "Cross-Origin-Embedder-Policy: require-corp" HTTP header