Os Security Patch Assessment Failed -21745-

The error typically appears in Tenable Nessus or Tenable Security Center scans. It indicates that while the scanner may have reached the target, it could not successfully execute the checks needed to audit the system's patch status. Common Causes

The most straightforward trigger is an incorrect credential set. This happens when passwords change, service accounts expire, or active domain policies lock out the scanner's user profile. OS Security Patch Assessment Failed | Tenable® os security patch assessment failed -21745-