The 2012 R2 Windows Server is the 6th version of Windows Server server operating system which is made by Microsoft. It is a part of the Windows NT family of the operating systems.
Active Directory helps to store the default user profiles as well as the user login scripts.
It helps to assign the system policies, assign permission to the users overt he network resources and also to deploy software in a centralized manner.
Depending on how much you add to your computer it could make it have too much, so it can work slower and make it malfunction therefore i would Troubleshoot for that reason.
