Failed to enter namespaces maintenance mode due to Error com.vmware.vapi errors.unauthenticated

You can’t put your host in maintenance due to this error “Failed to enter namespaces maintenance mode due to Error com.vmware.vapi errors.unauthenticated”

It’s time to check if you have a certificate expired, login to VCSA over ssh and execute this command:
for store in $(/usr/lib/vmware-vmafd/bin/vecs-cli store list | grep -v TRUSTED_ROOT_CRLS); do echo “[*] Store :” $store; /usr/lib/vmware-vmafd/bin/vecs-cli entry list –store $store –text | grep -ie “Alias” -ie “Not After”;done;

The WCP certificate are expired

[*] Store : wcp
Alias : wcp
Not After : Jan 10 11:48:31 2023 GMT

To renew the certificate execute this command /usr/lib/vmware-vmca/bin/certificate-manager with option 6 “Replace Solution user certificates with VMCA certificates”