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Resolved my issue. Clear instructions. Easy to follow. No jargon. Pictures helped. Didn't match my screen. Incorrect instructions. Too technical. Not enough information. Not enough pictures. Any additional feedback? Submit feedback. In the computer world, there are standard directory service protocols that instruct on how a directory service should function. Windows NT is a directory service network operating system introduced by Microsoft in It was in Windows NT that the concept of domains was first introduced for resource management.
A Windows NT domain is a container that can be used to group users, computers, and groups under a single entity. This domain concept has also been carried forward to Windows Active Directory. Windows NT directory service soon became unscalable as it did not contain many functionalities that organizations demanded from their directory services such as more comprehensive delegation of administrative roles, and a scalable hierarchical structure for organizing objects.
This is where Microsoft introduced Windows Active Directory. Active Directory solved many of the limitations that Windows NT had, such as the size limit of 40MB and 40, objects.
Active Directory also had a scalable hierarchical structure for the organization of objects, and it could delegate roles to objects without an all-or-nothing condition. Active Directory is based on the LDAP protocol, and it provides everything that was expected out of a directory service such as:. User and Resource management.
Security Services. Centralized directory management. Directory enabled infrastructure. Directory enabled applications. Being the successor to Windows NT, the Active directory obviously had many advantages. For example, while the schema of Windows NT is fixed and did not support the addition of new objects, AD has a flexible schema that allows the addition of new objects that allowed for better scaling functionality. Another key difference was the change in the trust systems between domains within the network.
Windows NT domains had a simple trust relationship, where there are no automatic transitive trusts formed between domains. Active Directory changed that and allowed transitive trusts to occur between domains.
In Active Directory, however, this transitive trust occurs and domain A will automatically trust domain C. Windows NT. Active Directory. The maximum database size is 40 MB with a maximum of 40, users. The maximum database size is 16 TB with millions of objects per forest. Schema Extensibility. Does not support the addition of new objects. Schema is fully extensible. Access methodologies. Supports Microsoft API. Supports LDAP-based access to objects. LDAP is the standard protocol used by directories.
Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services. Privacy policy. A service has a primary security identity that determines the access rights for local and network resources. The security context for a Microsoft Win32 service is determined by the service account that's used to start the service.
You use a service account to:. Depending on your use case, you can use a managed service account MSA , a computer account, or a user account to run a service. You must first test a service to confirm that it can use a managed service account.
If the service can use an MSA, you should use one. For services that run in your on-premises environment, use group managed service accounts gMSAs whenever possible. For information about the requirements for gMSAs, see Get started with group managed service accounts. They can be used for multiple services on that server. If you can't use an MSA, consider using a computer account.
The LocalSystem account is a predefined local account that has extensive permissions on the local computer and acts as the computer identity on the network. You can use it to start a service and provide a security context for that service. When you use a computer account, you can't determine which service on the computer is using that account.
Consequently, you can't audit which service is making changes. If you can't use an MSA, consider using a user account. A user account can be a domain user account or a local user account. A domain user account enables the service to take full advantage of the service security features of Windows and Microsoft Active Directory Domain Services.
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