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Asked: 2026-05-16T07:59:50+00:00

I am making a desktop application in C#, Visual Studio 2010 on Windows XP

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I am making a desktop application in C#, Visual Studio 2010 on Windows XP SP2 Professional.

If I run that application directly from the published folder without running setup OR run it from debug folder OR simply debug the application, it does not give this error. But if I run setup from published folder and then run it from start menu, it gives this error:

An attempt to attach an auto-named database for file C:\Documents and Settings\Desi\Local Settings\Apps\2.0\Data\K9KMBYK5.881\EKOOHKP2.0Y1\smas..tion_ddac366ea7cca062_0001.0000_c8a0800c5798ef15\Data\SmasDb.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.

I am publishing application to a folder in ‘my documents’.

C:\Documents and Settings\Desi\Local Settings\Apps\2.0\Data\K9KMBYK5.881\EKOOHKP2.0Y1\smas..tion_ddac366ea7cca062_0001.0000_c8a0800c5798ef15\Data\1.0.0.0 (this Data directory has only the user.config file.)

C:\Documents and Settings\Desi\Local Settings\Apps\2.0\LWGCKB30.QZJ\E81QYJON.ZX9\manifests (contains smas..tion_ddac366ea7cca062_0001.0000_none_a42d8ca7a940cae4.cdf-ms smas..tion_ddac366ea7cca062_0001.0000_none_a42d8ca7a940cae4.manifest smas.exe_ddac366ea7cca062_0001.0000_none_3d144d2ce016963b.cdf-ms smas.exe_ddac366ea7cca062_0001.0000_none_3d144d2ce016963b.manifest)

C:\Documents and Settings\Desi\Local Settings\Apps\2.0\LWGCKB30.QZJ\E81QYJON.ZX9\smas.exe_ddac366ea7cca062_0001.0000_none_3d144d2ce016963b (contains
SMAS.exe.config, SmasDb.mdf, SmasDb_log.ldf)

C:\Documents and Settings\Desi\Local Settings\Apps\2.0\LWGCKB30.QZJ\E81QYJON.ZX9\smas..tion_ddac366ea7cca062_0001.0000_c8a0800c5798ef15 (this directory has all files including all dlls, SmasDb.mdf and SmasDb_log.ldf, SMAS.exe.config, some .cdf-ms and .manifest files NOT same as above .cdf-ms and .manifest)

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1 Answer

  1. Editorial Team

    Did you verify that the long path (C:\Documents and Settings\USER\Local Settings\Apps\2.0\Data\MP63M1NA.ZG5\BCOVJJWN.C53\smas..tion_ddac366ea7cca062_0001.0000_9c79a710d42895b6\Data\SmasDb.mdf) to see if there actually is a database there?

    From the three options in the error message, I would go for: or specified file cannot be opened

    You’ll have to think about where you want the database to be (on a non-developer computer), and make sure it is copied there.

    See the post Working with Databases in Visual Web Developer 2005 Express Edition about the |DataDirectory| syntax.

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