"statusCode":400,"message":"Call returned SOAP fault class CES::SearchServerException: The security provider is not valid
Can Anybody experience above error while configuring coveo for sitecore. I am getting this error in diagnosis page of coveo for the serarch endpoint steps
I was able to get solution of my question.
Security provider was not added in admin panel of coveo search. go admin panel--> configuration--> security--> security provider--> add security provider or edit security provider.
I see in your answer that you added the provider manually. You can do it but the best option is to have Coveo for Sitecore configuring it for you. Usually you would see the error above between the installation and the first rebuild, since the creation of the resources are done during the first re-index.
A similar issue here: https://answers.coveo.com/questions/2719/what-is-causing-invalid-security-providers.html