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    Nintex Knowledge Base

    The expression prefix 'NFResources' was not recognized when customize the item form is clicked in the list ribbon

    Status: Validated

    ISSUE
    When customize the item form is clicked to browse to Nintex Forms designer to design a form 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 to use for Nintex Forms.
    3. Click on Manage Features from the ribbon.
    4. Deactivate (if active).
    5. Re-activate the "Nintex Forms feature.
    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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