64-bit server but still running on Sitecore 5.3

There seem to be a couple of issues with some libraries referenced in 5.3 when you run those libraries on an 64-bit environment. A while ago I heard about a trick which would allow you to run IIS in 32-bit mode, even when the OS is running on 64-bits. Today a partner called me with the exact same question. So I’ve redirected this person to the knowledge base from Microsoft: How to switch between the 32-bit versions of ASP.NET 1.1 and the 64-bit version of ASP.NET 2.0 on a 64-bit version of Windows

I haven’t found any time to test it. So all experiences are welcome!

Update: The partner just contacted me and told me it’s working. Of course both them and we don’t recommend such a solution. But in some cases you simply have no choice. Thanks for sharing.

One thought on “64-bit server but still running on Sitecore 5.3”

  1. I blogged about it here http://www.cassidy.dk/blog/sitecore/2008/06/is-not-valid-win32-application.html – but only to later discover this was actually already present on SDN5 here http://sdn5.sitecore.net/Scrapbook/64%20bit%20environments.aspx.

    Which essentially is a copy/paste from the original MS article 🙂

    Been doing this as well in a non-production environment and the only negative effect I found was trouble attaching the (64 bit assumably) debugger to the 32 bit aspnet_wp.exe worker process.

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