The table below (source) lists the currently supported emulation versions at the time of writing. As you can see, it's possible to emulate all "recent" versions of Internet Explorer in one of two ways - either by forcing a standards mode, or allowing !DOCTYPE directives to control the mode. The exception to this dual behaviour is version 7 which is as is.
According to the documentation the IE8 (8000) and IE9 (9000) modes will switch to IE10 (10000) mode if installed. The documentation doesn't mention if this is still the case regarding IE11 so I'm not sure on the behaviour in that regard.
Value Description
11001 Internet Explorer 11. Webpages are displayed in IE11 edge mode, regardless of the !DOCTYPE directive.
11000 IE11. Webpages containing standards-based !DOCTYPE directives are displayed in IE11 edge mode. Default value for IE11.
10001 Internet Explorer 10. Webpages are displayed in IE10 Standards mode, regardless of the !DOCTYPE directive.
10000 Internet Explorer 10. Webpages containing standards-based !DOCTYPE directives are displayed in IE10 Standards mode. Default value for Internet Explorer 10.
9999 Windows Internet Explorer 9. Webpages are displayed in IE9 Standards mode, regardless of the !DOCTYPE directive.
9000 Internet Explorer 9. Webpages containing standards-based !DOCTYPE directives are displayed in IE9 mode. Default value for Internet Explorer 9.
8888 Webpages are displayed in IE8 Standards mode, regardless of the !DOCTYPE directive.
8000 Webpages containing standards-based !DOCTYPE directives are displayed in IE8 mode. Default value for Internet Explorer 8
7000 Webpages containing standards-based !DOCTYPE directives are displayed in IE7 Standards mode. Default value for applications hosting the WebBrowser Control.
Setting the emulation version is very straightforward - add a value to the registry in the below key containing the name of your executable file and a value from the table above.
HKEY_LOCAL_MACHINE (or HKEY_CURRENT_USER)
SOFTWARE
Microsoft
Internet Explorer
Main
FeatureControl
FEATURE_BROWSER_EMULATION
yourapp.exe = (DWORD) version |
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