CODEWITHSUNDEEP
c#.netlinqexceptionentity-framework-4.1
John
John

Reputation: 3677

PlatformNotSupportedException when executing a general LINQ query

I get a weird exception on a XP machine when I run a LINQ query.

{"The specified cryptographic algorithm is not supported on this platform."}

at System.Security.Cryptography.CapiNative.AcquireCsp(String keyContainer, String providerName, ProviderType providerType, CryptAcquireContextFlags flags, Boolean throwPlatformException)

There is no inner exception and the stacktrace is above.

I would expect that kind of exception when cryptography providers are in play etc., but with LINQ, I have no idea. I have to admit I am new to LINQ.

Here's the slightly simplified LINQ Query in EF 4.1:

using (var c = new MyContext())
{
    var v = (from item in c.Items where (item.ID==someid) select item).FirstOrDefault();
    return v;
}

Any insight?

EDIT: As already noted in the comments section below, I am using .NET 4.0 with EF 4.1, the connection string is a plain ol' app.config string with no crpto settings or other connection string options applied.

Upvotes: 6

Views: 1557

Answers (1)

Jon Skeet
Jon Skeet

Reputation: 1503290

I strongly suspect it's the security being used trying to talk to the database - check your connection string and any options you have with respect to encrypting the connection string itself.

Upvotes: 4

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