Could not load file or assembly 'X'

• Aug 30, 2023

To resolve this issue, first, try recommendations from the following topic: Type ‘X’ exists in both assemblies / Type ‘X’ is ambiguous in namespace ‘Y’.

Ensure that you copied DevExpress assemblies into the web site’s Bin folder after the website is deployed on the production machine. You can use the DevExpress Assembly Deployment Tool to deploy assemblies.

See also:

• How to deploy the DevExpress controls without GAC access

• Install DevExpress Assemblies to the GAC

• Could not load file or assembly “Microsoft.Windows.Design.Extensibility” or Could not load file or assembly “DevExpress X” when you use AjaxControlToolkit