Increase the quota number of machines that a user can join the domain (ms-DS-MachineAccountQuota)ilisateur peut joindre au domaine(ms-DS-MachineAccountQuota)

Decentralized management of a domain allows the administrator to delegate tasks to other users. Among these tasks, joining machines to domain. Each user, by default, can joing maximum of ten (10) machines, even if he is a delegate of an Organizational Unit, this article shows you how to increase this number.

1. Click Start then type Adsiedit.msc on the Search programs and files. Right click on Adsi Edit then click Connect To
2. Verify that Default naming context is selected in Select a well known Naming Context menu then click OK
   
3. Scroll to your domain, DC = Domain, right click then click Properties
   
4. Scroll the scroll bar to the attribute ms-DS-MachineAccountQuota, then click Edit
   
5. Modify the number with the appropriate one then click OK twice.