The configuration section 'telerik.web.ui' cannot be read because it is missing a section declaration

[Justin]

 The configuration section 'telerik.web.ui' cannot be read because it is missing a section declaration" in Web.config

[Vessy]

Hello Justin,

Can you go through the sections form the following article and ensure that all required settings are applied at your end: 

https://docs.telerik.com/devtools/aspnet-ajax/general-information/troubleshooting/web-resources-troubleshooting

If this does not help, please, send us your web config or even better - a sample project where we can replicate the issue and I will be glad to assist you further on this case.

Regards,
Vessy
Progress Telerik