Internetexplorerintegrationtestingallowed -

: It has been superseded by the InternetExplorerIntegrationReloadInIEModeAllowed policy.

If you still have a test flag named internetexplorerintegrationtestingallowed , consider this your sign: start planning its removal. Set it to false in your dev environment today, and begin the conversation about retiring the last IE dependencies. internetexplorerintegrationtestingallowed

In essence, the flag toggles whether your testing pipeline is permitted to launch an IE instance, attach to its DOM, or run integration steps that assume IE’s rendering engine (Trident) and security zones. attach to its DOM