hiWe haveexchange 2007 sp2 on 2 windows 2003 dc domain environment,exchange server work fine.I search microsoft document ,it say excchange 2007 sp2 support windows 2008 r2 domain,Iupgrade 1 of 2 windows 2003 dc to windows 2008 r2 three days ago.I find out exchange 2007 gui show out only 1 windows 2003 dc,windows 2008 r2 dc not on list.plase talk to me fix this issuethx a lot!

Are you getting this thorugh EXBPA?See Xiu's comment on this post for the same issue http://social.technet.microsoft.com/Forums/en/exchangesoftwareupdate/thread/44b7f6d7-ec77-467a-8866-cd267b74b4a0Also for compatibility issues see this one http://social.technet.microsoft.com/Forums/en/exchangesoftwareupdate/thread/1f0be2c7-0de0-492a-9cfd-18cdc5891bc8Raj

thank replyI HAVE UPDATE EXCHANGE 2007 SP2 Rollup 1 ,GET OUT NOT LIST WINDOWS 2008 R2 DCIN Exbpa.pre-req.xml and Exbpa.readiness.xm SHOW BELOW<Object Type="Directory" Key1="LDAP://%GLOBALCATALOG%" Key2="ou=Domain Controllers,%NCNAME%" Key3="(&(objectClass=computer)(serverReferenceBL=*)(|(&(operatingSystemVersion=5.2*)(operatingSystemServicePack=*))(operatingSystemVersion=6.*)))">BUT SAME RESULT

As Xiu Said,=================================================================I think you can contact CSS to get to resolve the problem, it is free to get the fix.Microsoft Help and Support http://support.microsoft.com/default.aspx?scid=fh;EN-US;PHONENUMBERShttp://support.microsoft.com/=================================================================Raj