• DCDiag reports “not advertising as time server”

    Just a quick post. Was onsite recently and had a DC that was not advertising is a time server. DCDiag confirmed it. Checked announceflags and it was set to 10 in hex (0x00000010) instead of 10 in decimal (0x0000000A). Changed registry value and use “w32tm...
  • DCLocator and Closest Site info

    I’ve been doing some research to prepare for my upcoming first delivery of AD Troubleshooting workshop. The agenda of content includes DCLocator and Netlogon content. Hence this post. For the real detail on dsgetdcname and details on the nltest /dsgetdc...
  • The case of the blocked FRS replication

    So I haven't written anything in quite a while and felt compelled to write something I recently ran into. A customer of mine is in the process of implementing Windows Server 2008 RODC in their branch offices. In order to do that, they are planning to...
  • Broadcom IPV4 Large Send Offload

    I have run into a couple of scenarios where this setting has caused issues and hence decided to blog about it. Windows 2008 X64 based domain controllers didn’t replicate with each other. However they were pulling updates inbound from other DCs (that happened...
  • Recovering "Lost" ADAM Admin Access

    Consider the following scenario. You install ADAM/LDS as a particular user account. Lets assume its a normal domain user account with local administrative rights on a member server. So the install proceeds normally and you create the ADAM instance. Assume...