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How can you run a 32 bit version of explorer on 64 bit windows 7 x64?

This is to allow tortoisehg to work.

I've tried running "c:\windows\syswow64\explorer /separate" and it just starts another version of the 64 bit explorer.

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Hm, confirmed on Stack Overflow (see last answers):… – splattne May 15 '09 at 10:39
up vote 5 down vote accepted

There is no 32bit explored executable bundled with 64bit win7, so you cant.

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This answer is incorrect, except possibly the last two words. 32-bit explorer is found in typical installations at C:\Windows\SysWow64\explorer.exe – user26523 Jul 27 '10 at 21:05
While the 32-bit version exists, as user26523 points out, you still can't run it. I assume it's there for library (et al) calls only. The fact that it will not run also suggest it might not actually be a full copy of explorer in the first place. – Chris S Dec 15 '10 at 13:47

Seems like there's currently no known way of getting this to work in Windows 7 (does in Vista though) according to the answers further down here: Stackoverflow question 39746

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Use the "Virtual XP Mode" addon. I am running Windows 7 64-bit and use the Cisco VPN and XP 32-bit IE for connecting to the corporate network.

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The ShrewSoft (or other) VPN Client is a much more elegant solution. – Chris S Dec 15 '10 at 13:41

You might be able to run 32-bit Explorer if you stop all other instances of the Explorer.exe process. Including your desktop shell. (Note that sometimes it can hang around in the background.)

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Nope. That doesn't work. – Chris S Dec 15 '10 at 13:40

There's a 64-bit version of TortoiseHg right on their download page:

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The general rule is:

If you start a app or script from a Desktop shortcut or Windows Explorer (= 64-bit applications on 64-bit Windows!) the script runs in 64-bit mode. But if you start the same script from a 32-bit application such as Total Commander the scripts runs in 32-bit mode.

Copied from

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Explorer++ is the solution that worked for us to run ClearCase. All our context menu's display in explorer++ and is also useful as it has Tabs in it

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