“Provider cannot be found” error after migrating from IIS 6.0 to IIS 8.5

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I have a ASP site which is working fine on Windows Server 2003 & IIS 6.0. I migrated to Windows Server 2012 R2 IIS 8.5

I am getting an error when it tries to connect to a database:

Provider cannot be found. It may not be properly installed

Error Details:
2014-11-05 10:33:06 10.30.62.21 POST _main.asp |50|800a0e7a|Provider_cannot_be_found._It_may_not_be_properly_installed. 80 - XX.XX.XX.XX Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+6.1;+WOW64;+Trident/5.0;+SLCC2;+.NET+CLR+2.0.50727;+.NET+CLR+3.5.30729;+.NET+CLR+3.0.30729;+.NET4.0C;+.NET4.0E;+.NET+CLR+1.1.4322;+InfoPath.3) /bottomright.asp?sAction=assist 500 0 0 1859

My connection string is as below:

GetConnectionString = "Provider=SQLNCLI.1;Data Source=" & m_DALServer & _
";User Id=user;Password=pwd;Connect Timeout=3;"

I have checked the ODBC Data Source Administrator (32 bit) on new server(2012) and found below two related drivers

SQL Native Client 2005.90.4035.00 Microsoft Corporation SQLNCLI.DLL
SQL Server 6.03.9600.163.84 Microsoft Corporation SQLSRV32.DLL
I have enabled my app pool to 32 bit and Managed Pipeline to Classic.

Posted 5-Nov-14 3:13am

hrdksanghavi12

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Comments

Maciej Los 5-Nov-14 9:22am

Strange!
Have a look here

Herman<T>.Instance 7-Nov-14 10:28am

What database version do you use?

hrdksanghavi12 7-Nov-14 10:38am

Its SQL Server 2005

2 solutions

Solution 1

Try changing the provider to SQLNCLI10.1 in your connection string.

Posted 5-Nov-14 3:27am

Richard Deeming

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hrdksanghavi12 7-Nov-14 5:48am

Hello Richard,

I tried using SQLNCLI10.1, but no luck. The issue still exists with same error message.

Richard Deeming 7-Nov-14 6:06am

How about SQLNCLI11.1?

hrdksanghavi12 7-Nov-14 7:36am

Hello Richard,

I tried using Provider=SQLNCLI and it works. But can you help me how could it be working with Provider=SQLNCLI.1, As in old environment (Windows Server 2003) it is working. Only migration activity has to be without any code change. Is is possible on make the application running with Provider=SQLNCLI.1 on Windows Werver 2012 R2?

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hrdksanghavi12 · Accepted Answer · 2014-11-07T03:33:00

Solution 2

Some drivers where installed by Tech Support Team. Which drivers I am not sure. But because of the patches I saw SQL Server Native Client 10 available in ODBC sources and my issue was resolved without any code change.

Thanks all for your time.

Posted 7-Nov-14 3:33am

hrdksanghavi12