A certificate is in the UI, but cannot be deleted (the delete option is grayed out).
The certificate does not have a UUID. The ID field contains the certificate name.
The certificate is not used (the "Where Used" column shows 0).
Searching in the NSX UI for this name returns only this object.
Environment
VMware NSX 4.x
Cause
During an initial attempt to remove the certificate, a problem within the block of code responsible for dealing with certificate deletions resulted in the certificate becoming stale.
Resolution
Resolved in NSX 4.2 for future certificate deletions, However, once a certificate gets into this stale state, upgrading to 4.2 won't fix or delete it. Please open a case with Broadcom Support for assistance with getting it removed.