Faced the same issue :
Virgo logs gave :
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Caused by: com.vmware.vim.vmomi.client.exception.VlsiCertificateException: Server certificate chain is not trusted and thumbprint doesn't match
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
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Fixed the mismatch and the Skyline health was fine.
