Configuring IIS to Run 32-bit Applications on 64-bit Windows

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Configuring IIS to Run 32-bit Applications on 64-bit Windows

Configuring IIS to Run 32-bit Applications on 64-bit Windows

If your application is using any 32bit dll, IIS on 64 bit machine needs to be switched to support 32 bit applications. Otherwise you will get an error message saying:

Could not load file or assembly 'XXXX' or one of its dependencies. An attempt was made to load a program with an incorrect format.

In II6 you have to run script in order to get working 32bit app on your 64bit IIS:
cscript.exe adsutil.vbs set W3SVC/AppPools/Enable32BitAppOnWin64 “true”

II7 has option in Advanced Settings of your application pool. Default value is false.

Posted: Mar 08 2010, 07:15 by dczupek | Comments (7)

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Comments

DotNetShoutout said:

Configuring IIS to Run 32-bit Applications on 64-bit Windows

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# March 08 2010, 12:15

DotNetKicks.com said:

Configuring IIS to Run 32-bit Applications on 64-bit Windows

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# March 08 2010, 12:16

Nicolas Sylvester said:

nice post!

# March 09 2010, 07:13

vic said:

You may also want to consider loading the user profile if you run third party COM apps. Process Model -> Load User Profile

# March 09 2010, 16:53

iAwaaz-News-for-the-People-by-the-People said:

Configuring IIS to Run 32-bit Applications on 64-bit Windows

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