Hi guys! I'm here again!
I have an issue!! I have a windows server 2008 R2 as the main controller in my network. This server has been working perfect for 8 months and it has windows active directory, DNS server, Print and document, web server, and windows server services installed and also Microsoft Exchange 2010. I know that this set up is not recommended specially with Exchange on it. Well, I decided to install a second server with windows server 2008 R2 on it as well..... well, everything went well with the installation and I configured this 2nd server to be a domain controller as well making the 1st server the Global Catalog server. I configured it like this because I want to have a back up of the active directory of the 1st sever, this sever is kind of old and it might crash or something.
Well, here is the issue I have..... the 2nd server can't have a connection with the 1st one to be able to replicate. I troubleshooted with everything possible but not luck...... I used the fallowing troubleshooting methods:
1. both servers can ping each other
2. IPconfig shows that the settings on the NICs are correct. Both servers have static IPs, correct subnet mask, correct gateway, and both of them have the same primary DNS server IP.
3. I used the this article
and everything passed but this method
Test connectivity from the domain controller that is reporting the error to the global catalog server by using the global catalog services port
the port listed in that method which is 3268 is open in the 1st server but still it can't pass that test.
4. I used repadmin/showrepl and I get 4 errors which all say "Could not find the domain controller for this domain" BUT after 1 hour or so I run the command again and I get all of those 4 successful. However, even with that the 2nd server can't connect to the 1st one and when I restart the 2nd server and I run the command again I go back the Could not find the domain controller......
5. One thing I noticed, in the network places in the 2nd server..... the 1st server it doesn't show up. But, the 2nd server does shows up on the 1st server network places. The 1st server does appear on the network places on all other workstations and the 2nd server as well. This is of kind weird!! also, in the 2nd server just 4 workstations out of 60 show up on the network places.
I already enable and run the DSN client, Function Discovery Resource Publication, SSDP Discovery, and UPnP Device Host services but not luck!
Is there anything else I could try? does anyone has gone through this? I hope you guys can give me a hand.