What problem we are solving?
Configure AEM6.1 to allow authors to login to /projects.html using OKTA.
Configured AEM6.1 author per the steps specified in the document-http://www.aemstuff.com/blogs/july/saml.html
Have we done OKTA integration with AEM6.1?
Yes; it's working in our Production environment; we created new test environment from scratch, OKTA SSO not working for the new author environment.
Issues we are facing: Not able to login to author using our network username & password.
The requested URL /libs/granite/core/content/login.html was not found on this server.
05.07.2017 23:30:45.683 *WARN* [qtp535806943-32583] com.adobe.granite.auth.saml.SamlAuthenticationHandler Private key of SP not provided: Cannot sign Authn request.
05.07.2017 23:32:03.085 *WARN* [qtp535806943-31835] com.adobe.granite.auth.saml.SamlAuthenticationHandler Could not retrieve SP's private key: Uninitialised key store for user authentication-service
None of the log message you mentioned is nothing to worry about. Issue sounds to be different that saml.
Enable debug on com.adobe.granite.auth.saml.SamlAuthenticationHandler and then repeat the test case and send us logs, osgi config snapshot and har file. Generating HAR files and Analyzing Web Requests - Atlassian Documentation
I'm able to resolve the issue. I made changes few changes - (1) Apache config changes (2) Author & groups permissions were missing.