ASP.Net error: “The identity of application pool is invalid”

Question

My ASP.Net web service cannot run because the application pool is unable to start due to the identity crisis it\'s experiencing.

The user I\'m using in the app pool is a

Answer 1

In my case the problem was that I was trying to use a domain account while the domain controller had an issue with my machine. I had just created a new VM with a newer version of Windows (Windows 10) and had asked the domain administrator to add it to the domain, but I kept the same hostname as on my other machine.

Also, in the Event Viewer I found error messages concerning the domain controller and such, that gave me a clue.

I had to remove the machine from the domain and add it again, and the problem was solved.