This policy setting allows you to treat Level 2 errors as warnings instead of errors. Level 2 errors occur when the message ...

This policy setting allows you to treat Level 2 errors as warnings instead of errors.  Level 2 errors occur when the message signature appears to be valid, but there are other issues with the signature. If you enable this policy setting, Level 2 errors will be treated as warnings.If you disable or do not configure this policy setting, Level 2 errors will be treated as errorsWhen you specify a value for PromoteErrorsAsWarnings, note that potential Level 2 error conditions include the following:- Unknown Signature Algorithm- No Signing Certification Found- Bad Attribute Sets- No Issuer Certificate found- No CRL Found- Out-of-date CRL- Root Trust Problem- Out-of-date CTL