vcenter提示连不上cannot connect to vcenter single sign-on server 7444/sts/stsservice/vsphere.local

1. Login on vCenter appliance through "root" 登录 vcenter的5480端口
2. Go to "Admin" tab

3. Click Yes on "Certificate regeneration enabled" >>>> Submit .

4. Reboot.

Try above troubleshooting and issue will get resolve.

重新连接9443端口