VCF Operations enforces strict certificate format validation when importing certificate chains. According to VMware Cloud Foundation 9.x certificate management requirements,all uploaded certificates must be PEM-encoded. A PEM certificate must contain:

ASCII-encoded content

Proper headers such as:

-----BEGIN CERTIFICATE-----

-----END CERTIFICATE-----

If the certificate is encoded inDER, PFX, PKCS#12, or any non-PEM format, VCF Operations will reject the upload with the error:

“The provided certificate content is invalid.”

This matches the behavior described in the question.

Option B (chain order invalid) and Option C (missing root CA) can cause validation issuesonly afterthe certificate file is successfully parsed. The error described indicatesthe file itself cannot be parsed, which directly points to encoding.

Option D (missing private key) is incorrect becausecertificate chain uploads must NOT include a private key— private keys are only used during CSR signing and are handled separately by the system.