You can't do that. IIS AppPool\<user> accounts are "Application Pool Identity" accounts which are synthesised by IIS when the pool is running. ApplicationPoolIdentity account lifetimes are managed entirely by IIS and the OS and you'll never be able to authenticate interactively with them.
You can't do that.
IIS AppPool\<user>
accounts are "Application Pool Identity" accounts which are synthesised by IIS when the pool is running.ApplicationPoolIdentity
account lifetimes are managed entirely by IIS and the OS and you'll never be able to authenticate interactively with them.