What is a PDC Emulator, and how can you find out if it is working?

 PDC stands for Primary Domain Controller. A PDC Emulator is a domain controller with specific and unique functions. 

For example, when there is a failed attempt at authorisation in a database, the information is sent to the PDC emulator which can then go through the latest passwords and verify user input to grant or deny access. The PDC emulator also maintains the clock for a system or database.

There are a few ways to check if the emulator is functioning as required. Firstly, you can try to verify if time is synced across a particular domain and see if users are able to lock their accounts without any issues. You can also check if the Backup Domain Controllers or BDCs for Windows are getting updates as required. If any of these conditions are false, then you can deduce that the PDC emulator is not working.