I don't know what was wrong with the server but after a reboot that error stopped.
But now the server logs are full of errors and i can't se any newer client computers.
2017-02-14 13:02:10 Warning: CDataMinersModule [Thread 59c]: CRemoteWriteLogHandler: Failed to write log of type EESVIRUSDB_STATUS from 'COMPUTER' with uuid 82fa54e2-372c-46fb-b8a0-daee20ab2778 with error: Duplicate value for 82fa54e2-372c-46fb-b8a0-daee20ab2778 with meta (148700976000232,148700976000200), possibly cloned or reverted machine
2017-02-14 14:41:23 Warning: CDataMinersModule [Thread 59c]: CRemoteWriteLogHandler: Failed to write log of type EESVIRUSDB_STATUS from 'COMPUTER' with uuid 82fa54e2-372c-46fb-b8a0-daee20ab2778 with error: Duplicate value for 82fa54e2-372c-46fb-b8a0-daee20ab2778 with meta (148700976000232,148700976000100), possibly cloned or reverted machine
2017-02-14 17:01:13 Warning: CDataMinersModule [Thread 59c]: CRemoteWriteLogHandler: Failed to write log of type EESVIRUSDB_STATUS from 'COMPUTER' with uuid 82fa54e2-372c-46fb-b8a0-daee20ab2778 with error: Duplicate value for 82fa54e2-372c-46fb-b8a0-daee20ab2778 with meta (148700976000233,148700976000200), possibly cloned or reverted machine
2017-02-14 17:02:10 Warning: CDataMinersModule [Thread 59c]: CRemoteWriteLogHandler: Failed to write log of type EESVIRUSDB_STATUS from 'COMPUTER' with uuid 82fa54e2-372c-46fb-b8a0-daee20ab2778 with error: Duplicate value for 82fa54e2-372c-46fb-b8a0-daee20ab2778 with meta (148700976000233,148700976000200), possibly cloned or reverted machine
2017-02-14 23:00:26 Error: CDatabaseModule [Thread c8c]: Database connection down. Exception:[Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:00:26 Error: CDataMinersModule [Thread fd0]: CDefaultWriteLogHandler: Failed to write log of type COMPUTER_CONNECTED_EVENT with error: [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:00:40 Error: CReplicationModule [Thread 11d8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:00:42 Error: CReplicationModule [Thread 11d8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:00:45 Error: CDatabaseModule [Thread 1380]: Database connection down. Exception:[Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:00:45 Error: CDataMinersModule [Thread 1380]: CClientsDataMiner2: Failed with: [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:00:49 Error: CReplicationModule [Thread 11d8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:00:52 Error: CReplicationModule [Thread 11d8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:00:52 Error: CDatabaseModule [Thread 1470]: Database connection down. Exception:[Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:00:52 Error: CCleanupModule [Thread 1470]: Failed to process cleanup operation CALCULATE_STATE_SNAPSHOTS with error: [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:00:57 Error: CReplicationModule [Thread 11d8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:01:03 Error: CDatabaseModule [Thread 9f4]: Database connection down. Exception:[Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:01:03 Error: CDatabaseModule [Thread 1730]: Database connection down. Exception:[Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:01:03 Error: CDataMinersModule [Thread 9f4]: CDeltaEventLogDataMiner: Failed to create snapshot for log APPS_INSTALLED_STATUS with: [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:01:03 Error: AutomationModule [Thread 1730]: Router: Bus message processing failed. Error: [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:01:09 Error: CReplicationModule [Thread 11d8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:01:10 Error: CReplicationModule [Thread 11d8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:01:13 Error: CReplicationModule [Thread 11d8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:01:23 Error: CReplicationModule [Thread 11d8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:01:29 Error: CReplicationModule [Thread 11d8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:01:29 Error: CReplicationModule [Thread 10e8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:01:29 Error: CDatabaseModule [Thread c8c]: Database connection down. Exception:[Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:01:40 Error: CReplicationModule [Thread 10e8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:01:42 Error: CReplicationModule [Thread 10e8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:01:49 Error: CReplicationModule [Thread 10e8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:01:52 Error: CReplicationModule [Thread 10e8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:01:57 Error: CReplicationModule [Thread 10e8]: CStepProcessor: Replication master rejected, slave is busy
2017-02-14 23:02:03 Error: CDatabaseModule [Thread dd8]: Database connection down. Exception:[Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:02:06 Error: CDatabaseModule [Thread 9f4]: Database connection down. Exception:[Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
2017-02-14 23:02:06 Error: AutomationModule [Thread 1730]: Router: Bus message processing failed. Error: [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. (17)
Everything worked fine with the first 8 clients . But after i started to deployed Agent+Antivirus to more computers the problems started. First the " Error: CRepositoryModule [Thread 550]: GetFile: Host 'repository.eset.com' not found " error and now the above ...
I have not changed anything on the SQL server or the server running the ERA services ..