Article ID: 115723, created on Mar 14, 2013, last review on May 11, 2014

  • Applies to:
  • Plesk for Windows


  1. Access to Adobe ColdFusion administrator page ( produces HTTP Error 500.0 - Internal Server Error
  2. Accessing ColdFusion scripts on the website produces HTTP Error 500.0 - Internal Server Error


This problem may be caused if Adobe ColdFusion for 32 bit systems is installed on 64 bit server and IIS application pool does not allow running 32 bit applications.


To allow 32 bit application to work, application pool should support 32 bit applications. By default, Plesk configures sites' application pools to support 32 bit applications, however ColdFusion administrative interface is working on DefaultAppPool which is not managed by Plesk and has 32 bit application support disabled by default.

To enable 32 bit application support, go to IIS ManagerApplication PoolsDefaultAppPool → right-click and choose Advanced Settings... → set Enable 32-bit Applications to true

If problem is affecting ColdFusion scripts on the website, apply same actions to site's application pool (default shared application pool is plesk(default)(2.0)(pool))

85a92ca67f2200d36506862eaa6ed6b8 56797cefb1efc9130f7c48a7d1db0f0c a914db3fdc7a53ddcfd1b2db8f5a1b9c

Email subscription for changes to this article
Save as PDF