error => network-related or instance-specific error in asp.net

Question

0.00/5 (No votes)

See more:

Hi.. I uploaded my site in website panel
but when I want to login in my site , an error has occured.
this is error :

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)

my connection string is :

HTML

<add name="MyConnectionString" connectionstring="Data Source=localhost;Initial Catalog=NameOfDatabase.mdf;Persist Security Info=True;User ID=UserName;Password=mypass" />

(my service provider says the above format.)
database that I used in my computer(before upload site) is ASPNETDB.mdf(automatically created when I used Asp.net configuration page)(sql express 2008)
I backup from ASPNETDB.mdf and in website panel I create a database with different name and then restore backup to it
(version of sql server in website panel was sql server 2012 )
and it seccessfully restored in my database.

I confused. can anyone help me ?

Posted 31-Oct-14 1:43am

hamid025

Updated 31-Oct-14 1:57am

v2

Add a Solution

Comments

Praveen_P 31-Oct-14 7:46am

post your connection string

hamid025 31-Oct-14 7:55am

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Maciej Los · Answer 1 · 2014-10-31T03:08:00

The error message says exactly what is wrong!

error:
The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections.

Please, read this:
Configure the remote access Server Configuration Option[^]
Configure the Windows Firewall to Allow SQL Server Access[^]

Connection string is wrong! It looks like you're trying to attach database, but you wrote, it was successfuly attached.
http://www.connectionstrings.com/sql-server/[^]

kedar001 · Answer 2 · 2014-10-31T02:50:00

Data Source or Server Name or IP address is Correct. For example here localhost. You can also put a .(dot) instead of machine name. For
example .\SQLExpress

2. If any instance used check whether the instance name is correct. For example here SQLExpress

3. If any remote connections check if there is some firewall installed if yes disable it.

4. Also check if remote connections are configured in SQL Server. To configure SQL Server to allow remote connections read here. This article
also explains how to create an exception in firewall in order to allow remote connections.

also check ..
A-network-related-or-instance-specific-error-occurred-while-establishing-a-conne[^]

error => network-related or instance-specific error in asp.net

2 solutions

Solution 2

Solution 1

Add your solution here

Preview 0