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3. The client and server cannot communicate, because they do not possess a common algorithm.

Artikel 2744

The client and server cannot communicate, because they do not possess a common algorithm.

Problem

The client and server cannot communicate, because they do not possess a common algorithm.

HRESULT error: SEC_E_ALGORITHM_MISMATCH (0x80090331)

Cause

This error happens during the TLS protocol negotiation with the server.

Possible causes:

1. The server only supports legacy TLS protocols (e.g. TLS 1.0).
2. The latest TLS protocols versions are not enabled on the client. This is usually the case with older operating systems (excludes Windows 10).

Solution

• For cause 1
  Enable TLS 1.0 on the client.
• For cause 2
  Enable TLS 1.2 on the client.

Keywords
TLS schannel

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