aaron.labiosa@nintex.com

Error: "Failed to create a control from assembly"

Blog Post created by aaron.labiosa@nintex.com Champion on Oct 21, 2014

Products: Nintex Workflow 2013, Nintex Workflow 2010


Summary


The error "Failed to create a control from assembly 'Nintex.Workflow.ServerControls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=913f6bae0ca5ae12', class 'Nintex.Workflow.ServerControls.UserMenu': The control with assembly name 'Nintex.Workflow.ServerControls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=913f6bae0ca5ae12' class name 'Nintex.Workflow.ServerControls.UserMenu' is not allowed for web at URL 'http://contoso.com. The type Nintex.Workflow.ServerControls.UserMenu, Nintex.Workflow.ServerControls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=913f6bae0ca5ae12 could not be found or it is not registered as safe.” indicates the need to activate the Web Application.


Symptom


Menus do not render on SharePoint sites.


Cause


One or more web applications that use Nintex Workflow are not activated for Nintex Workflow.


Resolution


Using the Farm Installation account or another account with sufficient permissions, activate all web applications that use Nintex Workflow.


To activate web applications for Nintex Workflow:

  1. On the Central Administration Home page, click Nintex Workflow Management.
  2. Click Web Application activation. The default web application name is automatically selected.
  3. To activate all web applications for Nintex Workflow, select the check box for All content web applications and then click Activate.
  4. To activate a subset of web applications for Nintex Workflow, select each web application and then click Activate; repeat until all desired web applications have been activated.

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