changing the computer Fully qualified Domain name of exchnage 2013

I have just installed new exchange 2013 with mailbox role on win server 2012.but now i need to change the FQDN of the i changed the name of the new exchange server.
i have already two mailbox server running in my exchange organisation 2013 but they have still the old name of this exchange server.
still i have not copies the database to this server
kastro AbbasiIT consultantAsked:
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MASEE Solution Guide - Technical Dept HeadCommented:
can you explain why you want to change FQDN of server?
kastro AbbasiIT consultantAuthor Commented:
Actually it was planned for this server to be a member of DAG and should be with the same naming scheme as of the other DAG servers.

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kastro AbbasiIT consultantAuthor Commented:
so well after reading this i come to know that it is better to remove this server and built it again.
so can you please tell me the steps to remove this exchange server 2013 .
AmitIT ArchitectCommented:
Just user add/remove program to remove the Exchange server. Once all roles are removed. It is now a member server in a domain, now rename your server. Restart your server. Verify if it is registered properly in DNS. Run nslookup and ping command to confirm.

Now, install Exchange server on this server again with Rollup. Make sure you are using same service pack and roll up installed on other server. No higher version.

Let me know, if any doubt.
kastro AbbasiIT consultantAuthor Commented:
i did the same
go add/remove programm and try to remove the exchange 2013

but its taking too much time from the last one hour its struck ed at the  
step 1 of 11
MASEE Solution Guide - Technical Dept HeadCommented:
Don't be hurry wait some more time.
kastro AbbasiIT consultantAuthor Commented:
as i restart the server so what to do next.
AmitIT ArchitectCommented:
What next?

Either you recover this server again, with recover switch and then remove it again. Which is the recommended way. I hope this is not your first Exchange server, else steps will be bit complicated to remove it.

If not a first Exchange server, we can clean this up via adsiedit also.
kastro AbbasiIT consultantAuthor Commented:
if it is not first exchange ?
it is not a first exchange as i told you i have already two exchange servers  in organisation with DAG configured.
so how could i recover this i played alot with this server by removing water mark and tried but no success
AmitIT ArchitectCommented:
Clean up using adsiedit, be careful with this tool.
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