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CREDENTIALS in Azure.Identity
The AZURE_TOKEN_CREDENTIALS environment variable in Azure.Identity lets developers control which credential DefaultAzureCredential tries, instead of manually excluding credentials via DefaultAzureCredentialOptions. Setting it to 'dev' drops all deployed-service credentials (Environment, WorkloadIdentity, ManagedIdentity) and keeps only developer-tool credentials like VisualStudioCredential, avoiding the slow, guaranteed-to-fail ManagedIdentityCredential probe to the IMDS endpoint during local development. A 'prod' value does the opposite, and naming a specific credential (e.g. 'VisualStudioCredential') narrows the chain to just that one. From Azure.Identity 1.16.0, a constructor overload requires the variable to be set, throwing instead of silently falling back to the full chain when it's missing.
Source: https://jaliyaudagedara.blogspot.com/2026/08/use-of-azuretokencredentials-in.html. 8 Sync News only summarizes and links out; content copyright belongs to the authors and original sources.
