I have an issue with Unity (which is unfortunately not in current support). When trying to renew certificates, I got a certificate "left behind". I follow "Article Number: 000049556" but I can't delete an existing certificate. the answer is:
Operation failed. Error code: 0x6000951
Deletion of the default VASA Server certificate is not permitted. (Error Code: 0x6000951)
I can't find a solution. Can you give some advice? Have you encountered this problem? Please at least suggest an idea!

Thank you in advance!