In this tutorial we will learn how to solve Login failed for user 'IIS
APPPOOL\DefaultAppPool' or System.Data.SqlClient.SqlException problem in IIS7.
Basically This problem
comes when we work with Asp.Net Application With IIS Server. I got this error
while working with Asp.Net MVC Application. When I run My MVC application
suddenly i got this error
“System.Data.SqlClient.SqlException
was unhandled by user code: Login failed for user 'IIS
APPPOOL\DefaultAppPool’” and database connection
couldn't open.
There are some step for solving this problem.
1.
Go to your Run Window and there you type “Inetmgr”
and click oK ( Means Go to IIS Server).
2.
Here you will IIS Server window , from this
window you go to “Application pools” and then select “DefaultAppPool” Right click on it and
select “Advance Settings” and click on
that.
3.
When you will click on Advance setting link
it will open Advance setting window there you select “Identity” (In Process
Modal) and Change the path from ApplicationPoolIdentity to LocalSystem
When you will click on this Path three dotted button there a window will open from there “Built-in-Account “radio button
contain a dropdown box , from this dropdown box you change this path and the click
OK.
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