All users being logged in as System Account

Question

So I have my little Sharepoint single server farm all setup and everything was running pretty smoothly until I noticed this happening last week:

Every time someone logs in, they get logged in as "System Account" instead of "Domain\User"

I've done some extensive searching on here and Google, but the only solution that I came up with was that it was an App Pool Identity problem

Any suggestions?

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EDIT:

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I just wanted to say for the sake of anyone Googling this that here is how I fixed it: In the Administration Page, navigate your way to Farm Credentials. From there look at your Farm Account in the drop down menu, and make sure that user is set to a profile with enough privileges. Mine was set to NT\AUTHORITY or SYSTEM\NETWORK (I can't remember which; I've since stopped working with Sharepoint) and I changed it to DOMAIN\USER. After restarting Sharepoint and IIS everything worked and all the users were logging it with DOMAIN\USER instead of "System Account"

Answer 1

Sounds like you are on the right track. I would first check application pool security account. Is it possible that you selected a domain group that contains all of your users?

Answer 2

Also, after actions that Rich Bennema provide, maybe need to perform issreset to applay changes.