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Problem with access data source

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Category: General Discussion
Forum Name: ASP.NET Discussion
Forum Description: Discussion and chat on ASP.NET related topics.
URL: https://forums.webwiz.net/forum_posts.asp?TID=24852
Printed Date: 28 March 2026 at 9:08am
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Topic: Problem with access data source
Posted By: urko
Subject: Problem with access data source
Date Posted: 18 November 2007 at 5:41pm
I installed Visual web developer 2005, ajax extension, etc...

1.
Now when i created a new website and added existing db ( i use access DB )  to App_Data folder i get this error:




2.
When i try to create a new access data source i get this error:

Object reference not set to an instance of an object.

Funny thing is, that a few months ago, before i bought a new computer, i didn't had this problem.

I also made uninstall, and new install, but still same problem.


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1 thing though.... I have a backup of my previous website that i had on my old computer. when i copied it to a new computer, i had the same problem, even though it ran on the old one.


Thanks,


-------------
Urko



Replies:
Posted By: urko
Date Posted: 19 November 2007 at 12:56pm
I found the solution Smile

Solution:

To examine the registry:

1) Run regedit.exe;
2) Browse to the location "HKEY_CLASSES_ROOT\CLSID\{F9AE8980-7E52-11d0-8964-00C04FD611D7}" in the tree;
3) If there is a child node in the tree called "ProgID", then you are indeed experiencing a different problem - let me know if this is the case.

Otherwise, follow these steps to modify the registry:

1) Right click the node and select "New > Key";
2) Enter "ProgID" as the name;
3) Go to the main window and double click "(Default)";
4) Enter the value "MSIDXS.1";

------

Tested it, and it's working Smile




-------------
Urko


Posted By: shakir
Date Posted: 05 December 2007 at 4:26pm
if you install MDAC  the problem will be solve.  Any how congrsagulatioin to solve the problem by editing registry yourself



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