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TRUST_E_EXPLICIT_DISTRUST
TRUST_E_EXPLICIT_DISTRUST means that Windows found an explicit distrust decision for a certificate involved in validation. This can override an otherwise buildable chain and is intentionally different from simply having no trusted root.
Find the distrust source
- Identify the exact certificate and chain element that triggered the result.
- Review user and machine certificate stores, enterprise policy, and application-specific trust configuration.
- Remove a distrust entry only after verifying why it was added and confirming the replacement certificate or chain is legitimate.
Adding the same certificate to another store without understanding the explicit distrust decision can create conflicting and unsafe trust behavior.
Microsoft: certificate and trust return values
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