Control use of JavaScript JIT

Policy ID: DefaultJavaScriptJitSetting
Scope: Computer Configuration, User Configuration
Supported on: Microsoft Edge version 93, Windows 7 or later
Source: Microsoft Edge Policy Templates (version 155.0.4283.45)
Category: Microsoft Edge › Content settings

Description

Allows you to set whether Microsoft Edge runs the v8 JavaScript engine with JIT (Just In Time) compiler enabled or not.

Disabling the JavaScript JIT means that Microsoft Edge can render web content more slowly, and can also disable parts of JavaScript including WebAssembly. Disabling the JavaScript JIT can allow Microsoft Edge to render web content in a more secure configuration.

This policy can be overridden for specific URL patterns using the 'JavaScriptJitAllowedForSites' (Allow JavaScript to use JIT on these sites) and 'JavaScriptJitBlockedForSites' (Block JavaScript from using JIT on these sites) policies.

If you don't configure this policy, JavaScript JIT is enabled.

Policy options mapping:

* AllowJavaScriptJit (1) = Allow any site to run JavaScript JIT

* BlockJavaScriptJit (2) = Do not allow any site to run JavaScript JIT

Use the preceding information when configuring this policy.