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Possible Duplicate:
Multiple versions of internet explorer on a machine

Hiya. I'm a developer and I need to test my web applications on IE 7 and 8. how can I have them both installed on windows 7?


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marked as duplicate by random Apr 4 '10 at 8:56

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

up vote 2 down vote accepted

Use the IE8 Developer Tools (under Tools menu, or press F12). You can set the Browser mode and Document mode to IE7.

I've used this for development, and it has worked well.

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Short answer - you can't

Long Answer - Install Windows XP Mode and run IE7 in that.

EDIT: I have not suggested any other VM solutions as they will require an extra Windows XP licence - Windows 7 Pro, Ultimate and Enterprise include a Windows XP licence to be used in Windows XP Mode

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Or any other Virtual PC. – Martin Mar 19 '10 at 13:20
@Martin: I deliberately did not include that info as it will require an extra licence for Windows inside any other VM. The Windows 7 licence (Pro, Ultimate or Enterprise) includes a licence for Windows XP in XP Mode. – Shevek Mar 19 '10 at 13:54
Okay, that's right. – Martin Mar 22 '10 at 9:06

IE8 does have compatibility mode that can render pages as IE7 would see them. I would not relay on this for testing Javascript but for testing CSS it is fine.

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I've seen plenty of pages that look correct in IE7 but don't render or function correctly under IE8 compatibility mode. – Chris S Mar 19 '10 at 14:55
Compatibility mode is not full IE7 browser mode. F12 will give you the developer's tools where you can set the Browser and Documents Modes to both IE7. Compatibility mode will merely give you IE7 Document mode and IE8 Compat View Browser mode. – Chris Dwyer Mar 19 '10 at 15:08

You could also try something like this site:

which allows you to download and run various browsers in "sandboxed" modes, that can run alongside each other.

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You can try IETester

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