Initially our wsus servers version 3.2.7600.226 (2) are synchronizing properly with upstream (3.2.7600.226 also ) that run for a few years, then database size started to grow about 97 GB. Now 2 replica server (windows 2003 standard) failing to synchronize with the upstream server (windows 2008 standard) it says connection error, an error trying to connect the wsus server. When I perform server cleanup, database error, an error occured trying to perform a database operation. However if you untick this is a replica of the upstream server, it quickly sync and succeeds. I have tried WSUS_Cleanup_CL.exe, WSUS_Driver_Decline.exe and WSUSUTIL nothings helps. Should I better leave this is a relica of the upstream server untick it syncs and succeeds, what will be the impact, difference if this is untick?