error message: THE MERGE PROCESS WAS UNABLE TO CREATE A NEW GENERATION AT THE “SUBSCRIBER”. TROUBLESHOOT BY RESTARTING THE SYNCHRONIZATION WITH VERBOSE HISTORY LOGGING AND SPECIFY AN OUT PUT FILE TO WHICH TO WRITE. I tried "update sysmergepublications set [generation_leveling_threshold] = 0" on both Subscriber and Publisher, still it didn't work. Then I tried "select count (*) from dbo.MSmerge_contents" and "select count (*) from dbo.MSmerge_genhistory" on the Subscriber The both query was running indefinely with no results, instanly I realised there is some Locking problem. In desperation I restarted the Subscriber Database Engine and started the Agent. Magic! Replication was successfull.