A Windows Server Administrator may have different responsibilities in different organizations. For example: 1. Monitoring Windows Server for any alarms and alerts. 2. Managing Windows Servers and ensure maximum uptime. 3. Managing IIS by installing SSL Certificates and troubleshooting issues related to IIS. 4. Executing Change Requests on request of application teams and providing support. 5. Patching of Windows Servers. So these are some of the roles and responsibilities that a Windows Admin may be hired for.