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Editorial Team
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Asked: 2026-05-24T05:01:21+00:00

I am trying to use an existing SQL CE 4 database in my windows

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I am trying to use an existing SQL CE 4 database in my windows phone application.
I have setup the schema. Creating the context seems fine using my connection string of “Data Source=’appdata:/Items.sdf’;mode=’read only'”

However when I try to query the database I get the following error:

Incompatible Database Version. If this was a compatible file, run repair. For other cases refer to documentation. [ Db version = 4000000,Requested version = 3505053,File name = Items.sdf ]

The Items.sdf database was created using EntityFramework 4.1 Code First.

Any ideas on how to make this compatible? Should I be doing something else?

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1 Answer

  1. Editorial Team

    Windows Phone is using SQL Compact 3.5, not 4.0 as its engine. You’ll need to create a version 3.5-compatible file (not sure if EF can do that offhand).

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