Using windows 7(64-bit) machine.

Upgraded IE9 to IE11 using "IE11-Windows6.1-x64-en-us.exe"

After reboot I can see IE 11 is upgraded.

But either execute "iexplore.exe" from "C:\Program Files" or "C:\Program Files (x86)" => IE-64 bit mode gets launch. Please see results:

1. launched iexplorer.exe from "C:\Program Files (x86)"

Task manager :


2. launched iexplorer.exe from "C:\Program Files"

3. After IE 11 upgrade when i searched shortcut of IE, following was observed.

How to launch IE in 32-mode.

note: "Enable Enhanced Protected Mode" is unchecked.
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Community Chosen Answer

It looks to me to be working OK - i.e. it is running both 32 and 64-bit instances.  When both instances are running, in Task Manager if you expand the 'Image Name' column you should see *32 next to one of the two instances whilst the other should not contain that text.  Be aware that (frustratingly) the Help -> About dialogue does not display the instance architecture (i.e. 32 or 64-bit).
Answered 12/17/2015 by: shaunjmitchell
Senior Yellow Belt

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I believe it's supposed to auto-switch when needed, but it's not always reliable.

This however seems to work:

Create a shortcut to the EXE in "C:\Program Files (x86)" and then go into it's properties.
After the closing quote in the target field, add a space and then the URL.

I have a SharePoint site that I need to force the use of the x64 side of IE for it to be able to see that Outlook is installed and be able to pop to it.

Answered 12/18/2015 by: Chris.Thomson@Sitel.Com
Yellow Belt

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