I started getting this error today. I made no change to my environment. I get this message every 5 - 15minutes on my production mail server. If this continues, what complaints can I expect to get from end users? PS, I've done preliminary research and troubleshooting and can't find a resolve.. Thanks in advance (SIDE NOTE) ( I was prompt to change administrative password, changed it, I thought that may have caused the problem. I changed the password back to orginal password to see if problem goes away. no go) WARNING Process MSEXCHANGEADTOPOLOGY (PID=1364). When initializing a remote procedure call (RPC) to the Microsoft Exchange Active Directory Topology service, Exchange could not retrieve the SID for account <WKGUID=1A9E39DBE5747B979FFC0C6E5EA26,CN=Microsoft Exchange,CN=Services,CN=Configuration,...> - Error code=8007077f. The Microsoft Exchange Active Directory Topology service will continue starting with limited permissions. ERROR Process MSEXCHANGEADTOPOLOGY (PID=1364). When updating security for a remote procedure call (RPC) access for the Microsoft Exchange Active Directory Topology service, Exchange could not retrieve the security descriptor for Exchange server object MAIL - Error code=8007077f. The Microsoft Exchange Active Directory Topology service will continue starting with limited permissions. ERROR Process MSEXCHANGEADTOPOLOGY (PID=1364). The site monitor API was unable to verify the site name for this Exchange computer - Call=DsctxGetContext Error code=8007077f. Make sure that Exchange server is correctly registered on the DNS server.

What’s the exchange version? Please describe the exchange topology, and name the server role that generated these events Please disable all the third party software (Firewall, and anti-virus software), and then troubleshoot the issue Please verify if the problematic exchange server is the member of “Exchange servers” group What’s the OS of the problematic exchange server? If it’s windows server 2003, please apply KB 948496, reboot the machine, and then monitor the issue Has the teaming NIC been used on the problematic server? What’s the binding order on the problematic exchange server? Please use LDIFDE tool to dump the LDAP directory, and then display the dump in notepad to search for the owner of GUID (1A9E39DBE5747B979FFC0C6E5EA26) ldifde -f config.ldf -d "cn=configuration,dc=domain,dc=com" -p subtree Please run “DCDiag /v /a” and “NetDiag /v” to check the health of DC and connection to DC from the exchange server Please run ExBPA against the exchange server for health check Resources: Passive CCR node generating MSExchangeADAccess Event ID 2604 and 2501 (Similar events)James Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com