Thoughts about setup and deployment issues, WiX, XNA, the .NET Framework and Visual Studio
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Our development team has found a possible root cause and workaround for error code 20 that may appear when trying to download television guide data in Media Center 2005. The guide download error code article I previously published describes error code 20 as a file validation error, possibly caused by a mismatched guide package. Previously, the only recommended workaround was to try downloading guide data again later.
We got a hold of a machine that was displaying error code 20, and the developer debugged and found the failure resulted from a call to a cryptographic API that is used to decode guide data (which is downloaded in an encrypted format). For some reason we don't fully understand yet, this API returns a set of permissions that don't permit the guide data file to be opened correctly.
This workaround that we used to resolve this issue is the following:
Error code 20 is being caused by one of the machine keys in that folder, but it appears to be a different key on each computer that hits this problem.
<update date="6/22/2006"> Updated this workaround so that it only includes deleting Media Center-specific RSA keys. The previous workaround ended up deleting the entire RSA key store, which can impact other products on the system. </update>
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This article serves as a central location for all links to troubleshooting documentation that has been
I tried to go into that folder that should have the keys. Mine does not contain the one that you said to delete. I have no idea what to do. Any ideas?
Hi Gjr5017 - If you don't have the files listed in this blog post, then you are likely not running into this specific issue. You may want to try some of the other workarounds for guide download issues that are listed in the Guide Download Errors section of the article at http://blogs.msdn.com/astebner/articles/487537.aspx. If none of those help, you may want to post a question on the Microsoft.Public.Windows.MediaCenter newsgroup and hopefully someone there can provide some useful advice.
I'm experiencing the same problem on vista home premium not win 7 or not xp how do i fix this issue?