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I get this error when trying to login to stackoverflow via OpenID ( is the provider):

Unable to log in with your OpenID provider:

The following required non-empty parameters were empty in the DotNetOpenAuth.OpenId.Messages.PositiveAssertionResponse message: openid.invalidate_handle

Firefox 3.6.3, no custom cookies config, tried clearing cookies, etc.

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up vote 3 down vote accepted

Blogger has some incorrect behavior w/r/t OpenID so we have to run a custom build of DotNetOpenAuth that allows for it.

We lost that custom build in the last deploy, but I just re-deployed with the fixes reinstated -- it should work now.

I'll try to get Andrew to make this "relaxing" part of the main trunk as a configuration option, that way it won't get lost again when new versions are released.

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thanks for fixing it. – tobsen Apr 17 '10 at 19:50

I have the same problem. I managed to add a gmail openid with a browser where I was still logged in, and that seems to work.

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I'm experiencing the same problem in Chrome beta (5.0.342.9). I've worked around it by adding my Google profile as an alternate OpenID provider, the URL for that is:<USERNAME>

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