WebForms UnobtrusiveValidation Mode requires a ScriptResourceMapping for jQuery

In a specific situation (like using required validator) you may get the below server error:

Error : WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for ‘jquery’. Please add a ScriptResourceMapping named jquery (case-sensitive).


  • Open web.config file.
  • Below <appsettings> tag, add this key  <add value="None" key="ValidationSettings:UnobtrusiveValidationMode"/>
<add value="None" key="ValidationSettings:UnobtrusiveValidationMode"/>

Enjoy 🙂


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