When end users report issues accessing a Windows Server 2012 system but the system is still online, this is categorized as an access issue. Administrators should start troubleshooting access issues by first verifying that the system can be accessed from the system console and then verify that it can be accessed across the network. After that is validated, the access issue should be tested to reveal whether the access issue is affecting everyone or just a set of users. Access issues can be system or network related, but they can also be related to security configurations on the network or local system firewall or application, share, or NTFS permissions. The following sections can be used to help troubleshoot access issues.