Error "The expression prefix 'NFResources' was not recognized" when accessing Central Administration links

Document created by butlerj Support on Nov 19, 2018
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ISSUE
When trying to access the management links in Central Administration, the following error might occur:

The expression prefix 'NFResources' was not recognized. Please correct the prefix or register the prefix in the section of configuration.
ERROR CODE
RESOLUTION
  1. Navigate to: Central Administration > Application Management > Manage web applications
  2. Select the Web application you're using for Nintex Forms.
  3. Click on Manage Features from the ribbon.
  4. Deactivate (if active).
  5. Re-activate the "Nintex Forms 2010(2013)" feature.

Note: This will trigger a web.config update that will recycle the application pool (something to be aware of if this is on your production environment).

 

ADDITIONAL INFORMATION
This occurs when the correct entries were not added to the web.config file when the Forms solution package is deployed.
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