robert.dougan@mimtech.co.uk
Jul 28, 2011
  4100
(2 votes)

Transferring an EPiServer 6 Site from an x86 Environment to x64

Here’s a quick note about a problem I faced when moving an EPiServer site between servers.

The original source server was an x86 machine, running Server 2008 and IIS7. The destination server also ran Server 2008 and IIS7 but was an x64 environment.

I set up the site, browsed it and all seemed to be fine until I tried to access the editor or admin, those threw back 404s.

It took me a bit of investigation to find the issue. It turns out that my episerver.config file was looking for EPiServer directories at C:\Program Files\EPiServer but on the new x64 environment EPiServer had been installed at C:\Program Files (x86)\EPiServer.

These broken references were causing the 404s on the editor and admin, once they were changed the site functioned as expected.

Something to watch out for!

Jul 28, 2011

Comments

Jul 28, 2011 01:29 PM

Ran into this problem last year, our workaround was slightly different, we ended up creating a "symbolic link" as follows:

mklink /d "C:\Program Files\EPiServer" "C:\Program Files (x86)\EPiServer"

The reason for taking this approach was to keep the "episerver.config" file standardised across the development team for those who were running a 64bit OS.
Obviously the best approach would be to not have the "episerver.config" file under source control, but rather a global development and production config that is managed separately.

Whats your thoughts on this approach?

Please login to comment.
Latest blogs
Optimizely Opal: How to Build Effective Workflow Agents

If you're building workflow agents in Optimizely Opal, this post covers how specialized agents pass context to each other, why keeping agents small...

Andre | May 20, 2026

ReviewPR: An Azure Function That Reviews Your Azure DevOps Pull Requests With Claude

A while back I wrote about an  Azure Function App for PDF creation that we use to offload PDF rendering from our Optimizely DXP site. That same...

KennyG | May 19, 2026

Accelerating Optimizely CMS and Commerce upgrades with agentic AI (Part 2 of 2)

The Real Transformation in Optimizely CMS 13: Why the Upgrade Itself Is the Easy Part. A field-tested playbook for enterprise teams moving from...

Hung Le Hoang | May 18, 2026

Is the most powerful AI model really the best value?

Artificial Intelligence is already becoming part of everyday software development. Developers now use AI tools to generate code, write documentatio...

K Khan | May 16, 2026