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I receive this error message: "Unknown file type (binary data)" when trying to deploy my SQL CE database. What did I do wrong?

Article Number: 113 | Rating: 5/5 from 1 votes | Last Updated: Thu, May 3, 2012 at 11:40 PM

If you receive this error message, please try adding the following line to your web.config file:

<identity impersonate="true" userName="XXXXXXXXX" password="XXXXXX" />

This line should be added inside the tag <system.web> </system.web>. Username and password can be your login credentials for the system.

Therefore, the following is the whole web.config-content with which everything works:

<?xml version="1.0" encoding="UTF-8"?>

<configuration>

<system.data>

<DbProviderFactories>

<remove invariant="System.Data.SqlServerCe.4.0" />

<add invariant="System.Data.SqlServerCe.4.0" name="Microsoft® SQL Server® Compact 4.0" description=".NET Framework Data Provider for Microsoft SQL Server Compact" type="System.Data.SqlServerCe.SqlCeProviderFactory, System.Data.SqlServerCe, Version=4.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" />

</DbProviderFactories>

</system.data>

<system.web>

<identity impersonate="true" userName="???" password="???" />

</system.web>

</configuration>

Please note that our Control Panel does not really accept the .cshtml-files (webpages) and the .sdf-file (database) and you will always see the error message: "Unknown file type (binary data)". However, please just ignore the error message and by following the above guideline, everything will work as expected.

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