The GuidRepresentation for the reader is CSharpLegacy, which requires the binary sub type to be UuidLegacy, not UuidStandard about serilog-sinks-mongodb HOT 4 CLOSED

This may help: https://desk.cozyroc.com/portal/en/kb/articles/i-got-an-error-the-guidrepresentation-for-the-reader-is-csharplegacy-which-requires-the-binary-sub-type-to-be-uuidlegacy-not-uuidstandard

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Did already try that, without success. The only thing that seems to work is to install the latest driver package and the exception goes away.
It's still unconvenient and not documented my resolution.
Are you sure that there isn't anything that can be done in the code base?

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You upgraded to the latest mongo version and the issue went away? Sounds like a solution to me.

I'll update to the latest when I get a chance or you can submit a PR if you want to help expedite the process.

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Please try latest release.

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