Last Wednesday 11 June we updated the Domain Controller and other servers and workstations with the latest Microsoft updates. Since that time NOD32 has been unable to update successfully on the Domain Controller although all other servers and workstations update with no problem. The updates are downloaded OK but fail to install. I have changed the update server from "Choose automatically" to our ERA Server and back again with no effect. The log shows the following entries: 16/06/2008 15:01:23 Update Updater: retval = 0x101a, failures: 104 NT AUTHORITY\SYSTEM 16/06/2008 15:01:23 Update Updater: compile error 0 NT AUTHORITY\SYSTEM 16/06/2008 14:59:28 Update Updater: retval = 0x101a, failures: 103 NT AUTHORITY\SYSTEM 16/06/2008 14:59:28 Update Updater: compile error 0 NT AUTHORITY\SYSTEM 12/06/2008 12:49:58 Update NT AUTHORITY\SYSTEM 11/06/2008 20:49:41 Kernel Virus signature database successfully updated to version 3179 (20080611). I have tried flushing the cache but this makes no difference and the last update always fails to install. We are running NOD32 3.0.657 Business Edition on Windows 2003 SP2. Does anyone have any idea about the cause of this error and any possible solution?