The Authoritative Restore Explained

 (….well… in more detail) This blog posting is for the purposes of explaining the mechanism behind the authoritative restore within Active Directory. While there are many documents out there explaining step-by-step instructions of how to perform authoritative restores and the logic behind it, I feel there’s some information missing from these documents and, hence, this…

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Windows Server 2008 and 2008 R2 LDF Schema Extensions

Windows Server 2003 R2 extended the Windows Server 2003 schema from schema version 30 to 31.  The update from 30 to 31 was schema file sch31.ldf which included support for DFS Replication (DFSr).  An upgrade from Windows Server 2003 to Windows Server 2008 schema transitions the schema to schema version 44.  This includes sch32.ldf through…

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UserEnv Debugging Line by Line

There aren’t a lot of documents on the Internet about how to interpret UserEnv debugging logs.  I’ll admit that I do not have a dictionary for every single line that anyone could possibly see in a UserEnv log.  This blog is an attempt to decipher the UserEnv log line by line.  There are some lines…

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How to Consolidate Many Reverse DNS Zones into Fewer Larger Reverse DNS Zones

I just finished a large project consolidating hundreds of 16 bit and 24 bit Reverse DNS zones into a larger global 8 bit Reverse DNS Zone and configuring that zone to be an Active Directory Integrated (ADI) DNS Zone in the ForestDNSZones partition (replicated to all DNS Servers that are also domain controllers in the…

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Web Application Needing to Validate Users From Different Domains

A company I had done some work for has a process that they go through for their custom application.  This application must authenticate the user so it can do pass-through authentication.  Their process grabs the sAMAccountName attribute from the user object.  contoso.com\richpec would, of course, have the sAMAccountName of richpec.  Then they use the REMOTE_USER…

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