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I know a similar question was asked, but I did not find those answers useful. Some logging is turned on. What logging needs to be tunred on to find this information? This morning an OU just dissappeared. We were able to catch it before it replicated to another site, and do an active directory authoritative restore from that DC. But I need to find out how that DC just dissappeared. 
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I know a similar question was asked, but I did not find those answers useful. Some logging is turned on. What logging needs to be tunred on to find this information? This morning an OU just dissappeared. We were able to catch it before it replicated to another site, and do an active directory authoritative restore from that DC. But I need to find out how that DC just dissappeared. 

I would like to know if there is a way to determine who deleted an OU?

Operating system security (OS security) is the process of ensuring OS integrity, confidentiality and availability. OS security refers to specified steps or measures used to protect the OS from threats, viruses, worms, malware or remote hacker intrusions. OS security encompasses all preventive-control techniques, which safeguard any computer assets capable of being stolen, edited or deleted if OS security is compromised, including authentication, passwords and threats to systems and programs.