Login failed for user 'IIS APPPOOL\DefaultAppPool' on SQL Express 2012


i new both asp.net , sql server.

i have iis8 installed on windows 8 pc, sql server express 2012. given ignorance, have set using default values.

i have small web site set in own folder , set in iis 8 virtual folder under default web site. have set simple database called 'stockcontrol' via ssms, contains 1 table called 'colours' has 2 columns.

one page in website simple asp.net form runs on localhost without problems.

on second page in website added gridview asp.net control, letting expression web 4 generate connection string , place in web.config file. tested sql query , connection went along , both came successful. far, good.however, when try run page in browser error message:

server error in '/' application.

cannot open user default database. login failed.
login failed user 'iis apppool\defaultapppool'.

description: an unhandled exception occurred during execution of current web request. please review stack trace more information error , originated in code.

exception details: system.data.sqlclient.sqlexception: cannot open user default database. login failed.
login failed user 'iis apppool\defaultapppool'.

source error:
an unhandled exception generated during execution of current web request. information regarding origin , location of exception can identified using exception stack trace below.

stack trace: 
[sqlexception (0x80131904): cannot open user default database. login failed.  login failed user 'iis apppool\defaultapppool'.]

i have spent 2 days trying find out have done wrong , uninstalled , re-installed sql server in case i'd totally messed , corrupted database.

i appreciate please.

that means database permanently attached sql instance, fine.  connection string asking attach database, it's better on server if database attached time.

connect sql instance , verify database attached , replace

attachdbfilename="c:\program files\microsoft sql server\mssql11.sqlexpress\mssql\data\stockcontrol.mdf

with

database=stockcontrol

(assuming stockcontrol name of database).

david

david http://blogs.msdn.com/b/dbrowne/



SQL Server  >  Getting started with SQL Server



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