Hi,
>>I need to find out which servers are using this certificate, is there a tool or a way to find this out easily?
Use dir Cert:\LocalMachine\My in powershell.
>>Moreover in which cases is the old CSR used, is the best practice to create new CSR?
Both of them are OK. If the old CSR is created several years ago and the key length is short, you may create a new CSR.
Best Regards.
Steven Lee Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com.