Error occurred on asp: the underlying provider failed on open solution

Source: Internet
Author: User

When logging in to the system, errors occur through LINQ queries, the underlying provider failed on open, and how to fix it, see:

Step 1:
Open internet information service manager
step 2:
Click  on application pools in left navigation tree.
Step 3:
select your version pool. in my case, i am  Using asp .net v4.0. if you dont have this version, select  defaultapppool.
Step 4:
right click on step 3, and select advanced  Settings.
Step 5:
select identity in properties window and click the  button to change the value.
Step 6:
Select  local system   In built-in accounts combo box and click ok.
that ' S it. now run your application. everything works well.

ASP. Error: The underlying provider failed on open solution

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