Active Directory COM Exception - An operations error occurred (0x80072020)

Question

I am getting an intermittent COM Exception \"An operations error occurred (0x80072020)\" (shown below) when I try and query Active Directory using the metho

Answer 1

In my case, the web app pool was running as "DefaultAppPool" which did not have sufficient access to connect to Company's Active Directory. So, I impersonated an account which has access to AD in my code and everything worked fine.