SSRS Error

  • I get the following error in BIDS when trying to open a report:

    Deserialization failed: The report definition element 'ConnectionProperties' is empty at line 9, position 8. It is missing a mandatory child element of type 'DataProvider'.

    Line 9, position 8.90

    The report works fine, it was deployed previously but now I get this error in BIDS and I can't get into it to try and see what it's problem is, it's configured the same way as all my other reports that work fine as well, I don't want to have to recreate the report which I did last time I got this error.

    Has anyone come accross this before or does anyone know how to fix it?

    Thanks

  • Have you tried re-downloading the report from the Report Server?

    You can also open the RDL in a text editor and manually add the missing attribute.

  • Thanks, I looked at the code and it the data collection was slightly different from a report that works so I copied the code and replaced it and it now works.

    Thanks

  • I ran into this problem today. I had an .rdl file in a Visual Studio Project that had a problem with it. This is a development area where no security is needed on the data sources. Since I had a deployed version of it out on the Report Server, I figured I would just edit the report definition there to create a new rdl file, delete the problem file out of my project, then use Reports > Add > Existing Item... in the Solution Explorer to bring a working copy of the report back in.

    It seems to work at first, until I made any kind of change to the report in the VS design tab. Then I'd get the error quoted at the top of this thread. What was going on?

    I can't speak to why the <Connection String> tag was automatically being inserted into the rdl code, but deleting it AND changing the value of the <rd:SecurityType> tag inside a <Datasource> tag did the trick:

    <rd:SecurityType>Value</rd:SecurityType>

    "Value" was changed from >Windows< back to >None< . It was all too easy to forget that the security settings on a deployed report get modified and can cause problems when brought back into your development environment.

    Hopefully this helps someone else trying to puzzle out this particular error and how to fix it.

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