Have you just installed Windows 7 or Windows Server 2008 R2 and when you tried to setup your asp.net/mssql website you got following error: “Login failed for user ‘IIS APPPOOLClassic .NET AppPool‘”?
It seems that new IIS version 7.5 runs its Classic .NET AppPool process with a different identity, and from there we get error “Login failed for user ‘IIS APPPOOLClassic .NET AppPool‘”.
- go into Internet Information Services (IIS) Manager
- expand node with your computer name on left side and select “Application Pools”
- now in the window on the right side, right click “Classic .NET AppPool” and select “Advanced Settings…”
- find “Identity” property and change its value to “LocalSystem”
45 thoughts on “Login failed for user ‘IIS APPPOOLClassic .NET AppPool’”
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Thank you very much for the solution.
Sweet, thanks! First google hit too, saved me tons of time! At first I thought my export/import of logins from SQL Server A to SQL Server B goofed. Nope, it was just this setting.
thanks mate. worked for me too.
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Thank you for sharing this not so obvious solution.
Thanks So Much
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I was trying for a while to start a web with behaviorExtensions withou sucess until now.
Seems to me it is a serious security problem. Never give Local System user permission to a web service.
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Thanks a lot!2
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Muchas gracias por la solucion, funciona perfecto!. (Thank you very much for the solution, this works perfect)
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Its working with internet explorer….but having some trouble with google chrome.View is not same as it has.
Not sure what you mean by that?
Very helpful, thanks!!
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