Install hung when trying to start MS Exchange Transport service. And now I continually get 2080 Topology discovery Information event and then Red Error event 2114. Source: MSExchangeADAccess Process MSEXCHANGEADTOPOLOGYSERVICE.EXE (PID=1940) Topology Discovery failed, error 0x800040a02 (DSC_E_NO_SUITABLE_CDC)

Did you try to start MSexchangeADtopology service manually and try to install .

I had a similar problem. There was no child domain, but there as a second domain controller. I didn't specify the domain controller during setup and thought that might have been the issue. Check to see if the server is part of the Exchange Servers and Exchange Install Domain Servers. If it is not, add it. After I added the server I rebooted the machine the MSExchangeADTopology had no more issues.

If you have disabled IPv6 on your network adepter then that is the reason. Just enable ipv6 on NIC and restart server. You can check for example on http://www.mcpblog.net/Lists/Posts/Post.aspx?ID=36

Adding my Exchange Server to the two groups fixed my problem. I had removed it from the AD then added it again. Thanks for the advice.

"If you have disabled IPv6 on your network adepter then that is the reason. Just enable ipv6 on NIC and restart server. You can check for example on http://www.mcpblog.net/Lists/Posts/Post.aspx?ID=36"Thank you, I could not figure out why the transport service would not start andthis was my issue.