and go to vcenter servers and select the respective vcenter server and go to that page
2. Go to Manage >> Permissions >> Click “+” to add new user or group
3. Click “Add” button to select the users/groups
4. Select the “domain” and using the search tab search for the user/group.
Once selected click “ok” to add.
5. Once completed, you can login to the vcenter using the added AD user.
Note : Assumption is that the server hostname is created and added under the same AD.