i have server 2008 64 bit installed and im trying to reinstall Exchange server 2007 but geting an error"exchange server is in an inconsistent state only server recovery mode is available"tried by deleting the values but im unable to find the Under Configuration --> CN=Configuration -->CN=Services and all in ADSIedit.msc,the OU and CN related to Microsft exchange is already delated but still the problem exists,please help me please Thanks in advance

did you check this article?it look like same issue http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/thread/7c92af55-65dc-4a70-b6dc-a23b08fcd1d4Hello all,sorry for the late response. I have solved this issue, here is the path I used : I tried recreate the virtual directories with no luck. The fact the the setup was not running was bugging me a lot so I used performance and monitor tool to monitor AD communications when I was running the exsetup and everything appeared to be normal. After that I used procmon from sysinternals to monitor in what point exsetup would give that error and I discovered that it was reading exchange registry keys in HKLM\software\microsoft\exchange\v8.0 . So I exported HKLM\software\microsoft\exchange\v8.0\ClientAccessRole and deleted the whole key. After that, exsetup run normally and I managed to uninstall - reinstall CAS, update and everything seems to run smoothly ever since .... I hope there are no more surprises in this issue :) Thanks for your helpMCSE,CCNA,VCP,APP

Yes, Exchange setup verifies below registry keys to know any setup was running or failed and second place in AD, as you told that from AD it is removed then remove registries... HKLM\Software\Microsoft\Exchange\v8.0\<name of role> How does Exchange 2007 setup know to resume a failed setup? http://msexchangeteam.com/archive/2007/05/21/439529.aspx Setup Fails With Error: The Exchange Server Is in an Inconsistent State. Only Disaster Recovery Mode is Available http://technet.microsoft.com/en-us/library/cc411332.aspx You may need to run Setup /PrepareAD in case any required objects have been removed from AD... Amit Tank | MVP Exchange Server | MCITP: EMA | MCSA: M | http://ExchangeShare.WordPress.com