After Full Crawl Search was finished, I got the following error:
Error HRESULT E_FAIL has been returned from a call to a COM component
SharePoint Web Application Asp.Net Impersonation statues has been disabled.
- Start > Administrative Tools > IIS Manager.
- Navigate to the SharePoint web application > Authentication > Select Asp.Net Impersonate > For Right side > below Actions > Click on Enable.
- Check also impersonation settings in Web.Config.
- Go back to run Full Crawl Search that should be now worked properly without this error.