As the asp.net documentation correctly mentions, you cannot reliably use HttpClientFactories with cookies. The microservices documentation does not mention this, unfortunately.

Document Details

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• ID: 7b506236-b211-eb9d-b571-5efecdde76c8
• Version Independent ID: 24434b0e-0b82-e477-9440-2cc8f135df75
• Content: Use IHttpClientFactory to implement resilient HTTP requests
• Content Source: docs/architecture/microservices/implement-resilient-applications/use-httpclientfactory-to-implement-resilient-http-requests.md
• Product: dotnet-architecture
• Technology: microservices
• GitHub Login: @nishanil
• Microsoft Alias: nanil